M365 Developer expired without notification

In Mid-August, I was excited being able to create a new M365 Developer subscription after my old one expired (lack of activity). This week, I noticed this new Developer subscription was again expired after 90 days, while I did lots of testing in the past 2 months.

• Created many users and groups
• Setup Intune, enrolled VMs and tested policy settings
• Creating and testing many conditional access policies

Unfortunately, I didn't receive a notification at all this was about to happen and I don't really understand the reason behind it. How are Microsoft professionals currently able to test products in a production-like isolated setup (multiple users, Entra security, Defender, Intune, etc.) without having to pay lots of money for a Visual Studio yearly subscription or multiple Business Premium licenses??

How can I export my Intune configurations without being able to access Intune (Entra license is already converted to Free)?

Spinning up a new DEV tenant is also not possible, because my phone number is still attached in a profile which I deleted more than 6 months ago. When I login, it appears the profile still exists with my initial expired M365 developer subscription (December 2024). Because I have 2 phone numbers, I'm stuck.

When is this mess going to be solved? For professionals, it's important having reliable possibilities to learn, test and play around with products to be able to advise our customers. I don't mind spinning up a new tenant every X months, but then it would be nice if I'm actually being able to do so without being blocked by duplicate phone numbers in profiles that should have been cleaned up months ago.

Looking forward on your advice how to proceed.