We have not seen any other Internal Server Error being reported and it would be difficult to troubleshoot. Most of these Internal Server Error often gets resolved on developer’s end. That being said, we suggest you to try accessing your developer account from different environment, check your internet security, etc.
Tried without antivirus, without VPN, with another browser; with my phone.
I’m pretty sure it’s a problem related to my account.
I would like to create a new account, but I can’t as my phone number is associated to my first account.
Any idea how I could reset my developer account, or create an account without a phone number ?
You should be able to associate one phone number with multiple developer accounts. Alternatively, you can try creating an Amazon retail account on Amazon.com first, add your phone number for two-step verification and then use the same login credentials to sign in to the Amazon Developer Portal.
Q: I have multiple Amazon developer accounts and only one phone number. Can I have one phone number linked to multiple accounts for two-step verification?
Yes, you can have one phone number associated with multiple accounts. To accomplish this, add the phone number through the Amazon retail website, following the steps outlined in Where can I add or edit my current phone number?