Hi @john bullock
Currently, qualifying Microsoft 365 Developer Program members get a Microsoft 365 E5 Developer subscription. Existing members who have not migrated to a new Microsoft 365 E5 subscription have the option to migrate to a Microsoft 365 E5 subscription through March 31, 2024. On April 1, 2024, all Office 365 E3 subscriptions and data will be deleted. If you don't accept the offer to migrate to a Microsoft 365 E5 subscription by March 31, 2024, your Office 365 E3 subscription will be removed, and you will have the option to request a new subscription after 60 days.
You can only have one Microsoft 365 Developer Program account associated with your phone number. If you need to set up a new Developer Program account, for example to use a different email account or account type, you must delete your existing account first. To delete your account, sign in to your dashboard and choose Delete Profile
.
Note that if you delete your Developer Program account, you can only get a subscription after you have had your existing subscription for more than 60 days.
https://learn.microsoft.com/en-us/office/developer-program/microsoft-365-developer-program-faq?
If you choose to migrate to a Microsoft 365 E5 subscription, you can use the free tool Microsoft Mover to migrate your data. See also the following resources: