Hello Michael,
It has come to my attention recently that the Microsoft 365 Developer Program E5 is now only available to subscribers. Check the answer here: https://trainingsupport.microsoft.com/en-us/tcmct/forum/all/you-dont-current-qualify-for-a-microsoft-365/defce29e-97b8-4645-9ac6-4926df42fa74
Official update here: https://devblogs.microsoft.com/microsoft365dev/stay-ahead-of-the-game-with-the-latest-updates-to-the-microsoft-365-developer-program/
Hope this helps,
Regards,
Said