If you have an Amazon developer account that is not working, there are a few things you can try to fix the issue.
First, check to see if you have a current Amazon developer account. You can do this by going to the Amazon developer website and logging in. If you do not have a current account, you will need to create one.
Once you have verified that you have a current account, try to access the Amazon developer tools. These tools can be found in the Amazon developer console. If you are able to access the tools, then the issue is with your Amazon developer account. If you are not able to access the tools, then the issue is with your Amazon developer console.
To fix the issue with your Amazon developer account, contact Amazon customer support. Amazon customer support can be reached by phone at 1 (866) 216-1072 or by email at developer-support@amazon.com.