Title: Unable to complete Amazon Developer registration or access support
Our Amazon Developer registration repeatedly fails with the generic error:
“Something went wrong. Please try again by reloading the page.”
All required fields pass validation. We also tried Latin-character business
name and address, another browser, and a clean session.
The affected account has not completed registration. Therefore, opening
/support/cases/new redirects back to:
/settings/console/registration?return_to=/support/cases/new
Please escalate this to Developer Account Support and check the registration
eligibility/status of the affected Amazon account.
Affected account: zil***@gjdldt.cn
Country: China
Account type: Business
Legal entity: 硅基动力（深圳）科技有限公司
Could you remove the brackets () in your legal entity name and try again? If you’d like to keep the brackets in your name, you can contact the support team to update it after completing the registration.
When submitting the Amazon Developer registration form, the registration request completes, but the subsequent request to https://devportal-eu.amazon.com/registration/agreement/api.html fails with no response headers and is reported as a CORS error. The portal then displays “Something went wrong. Please try again by reloading the page.” I reproduced this in multiple browsers and networks. Please check the registration state and access to the EU developer portal for my account.
The user identified the actual failure as a CORS error on the
devportal-eu.amazon.com- registration/agreement/api.html call, and
you confirmed you “removed the incomplete registration that was
stuck” for their account, after which they registered successfully.
Could you please do the same for my two accounts — remove the stuck
incomplete registration state so I can retry?
I am facing identity problem.I am a individual developer without a company,I shouldn’t key in the customer facing business name at all,but I key in a nick name :TsTan,which now I couldn’t delete)edit.please help
Hi,
I’m experiencing the same registration issue.
My Amazon Developer registration cannot be completed. When I click Agree and Continue, the request fails on:
Chrome reports:
Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.
So I am stuck in a loop: Support redirects me to registration, but registration itself cannot complete.
I have already tested different customer-facing business names, including a simple name such as Atsys, and the same error occurs.
Could the Amazon team please investigate the registration status of my account and reset/remove the incomplete registration if necessary?
I can provide my affected Amazon account email privately if needed.
Thank you.
I received a mail,stating my company name is TsTan.in your mail,you stated individual developer and business developer shares the same form.as regarding to my previous post,you didn’t solve my problem at all.my developer facing business name should to deleted.when I key in this form,it is highlighted at must fill field.thanks in advance,thoo song tan
We are experiencing the same issue with our Amazon Developer account registration.
After completing all required fields and clicking “Agree and Continue,” the page immediately redirects to a 404 Page not found. The account menu still shows “Complete Registration.” Opening Console, My Apps, or the Login with Amazon developer console redirects back to the registration route and then displays the same 404.
We also tried submitting a Developer Support case under Appstore > Developer Portal Issues > UI/UX Issues. The form reset after clicking Send, but no case was created in My Appstore Cases.
Affected account: sup***@hebena.co.jp
Country: Japan
Account type: Business
Legal entity: 株式会社ヘベナ
Error occurred: October 2, 2026, approximately 10:40 AM JST (UTC+9)
Our Amazon Ads API access request has already been approved, and we need to complete the Developer Portal registration to create a Login with Amazon security profile. Could the appropriate team please check and reset or repair the stuck registration state?
We are experiencing the registration/404 problem described in this thread and would appreciate an account/portal-team investigation.
On 21 October 2026 (UTC+8), we filled the Amazon Developer Registration form for Luvsecretlingerie, Malaysia. The flow then requested sign-in again. After signing in, the registration page showed “404 Page not found.” The signed-in account menu still says “Complete Registration”; clicking it returns the same 404. The official Console and Login with Amazon console also redirect back to registration and remain inaccessible.
We attempted to create a Developer Support case under Appstore > Developer Portal Issues > UI/UX Issues. After clicking Send, the form reset, but My Appstore Cases remained empty after refresh. No case number was shown, so we cannot confirm that a case was created.
Could the appropriate team inspect whether the registration is stuck or incomplete and restore the legitimate completion flow? Please preserve the existing Amazon account, permissions and API profiles. If any destructive reset is necessary, please explain its scope and obtain our explicit approval first.
Please provide a working private support route for identifying the affected account, since the case form does not produce a record. We can provide the account email and screenshots privately. We have deliberately omitted personal contact details, credentials and private account identifiers from this public post.
We are experiencing the same issue for our US business, Kashi Scientific LLC. On October 31, 2026 (Pacific time), sign-in works, but the menu still shows “Complete Registration”. Selecting it returns “404 Page not found” instead of a form. The Login with Amazon console redirects to the same broken registration page. Signing out and back in did not help. The error also remains after completing Community signup.
We tried submitting a support case under Appstore > Developer Portal Issues > UI/UX Issues. After Send, the form reset, but My Appstore Cases still showed no results after refresh. No case number was shown, so we cannot confirm that a case was created.
Our separate Amazon Ads API access request is currently Pending, not approved. We need to complete Developer registration to create an LWA security profile for our own internal advertising integration.
Could the Developer Portal team investigate whether registration is stuck or incomplete and provide a working private support route? We can provide account details privately. Please preserve existing permissions and applications; if any destructive reset is necessary, explain its impact and obtain our approval first.
We couldn’t find a developer account associated with your current email address, so it looks like the registration didn’t complete. Could you send me a private message with a screenshot of the registration page showing the information you entered?
A couple of things to check when you try again:
Each address line must be 60 characters or fewer.
If you see an “invalid company name” error, try registering with a different name. Once your account is set up, you can file a Contact Us case to have the profile name updated.
