To resolve the issue of not qualifying for a Microsoft 365 Developer Program sandbox subscription, you may need to ensure that there are no lingering associations with your previous accounts or phone numbers. Since you've already deleted your old profiles, it’s important to verify that your new Microsoft account does not have any conflicts with prior accounts. Here are some steps you can take:
- Check Account Status: Ensure that your new Microsoft account is fully set up and not linked to any old accounts or phone numbers.
- Wait Period: If you recently deleted your old accounts, there may be a waiting period before you can use a new account for the Developer Program. Ensure that enough time has passed since the deletion.
- Contact Support: If the issue persists, consider reaching out to Microsoft support for assistance in resetting your eligibility and clearing any backend associations that might be blocking access to the sandbox.
Unfortunately, I cannot assist directly with account management or eligibility resets, but following these steps should help you resolve the issue.