Cannot access old Collab project

I have Unity Hub 3.x

- I go to "open remote project"
- I see many projects, obviously they were all on Collab but not on Plastic SCM because I've almost never used Plastic SCM.
- I select the project that I want.
- It opens up empty, with Collab activated, but saying it cannot retrieve any history or files.

I'm sure I did many pushes to Collab in the past. How can I retrieve my project?

I created a Plastic workspace for it just to see if it would retrieve the old files but it didn't. There's nothing there. Probably it's separate.

 

I second this issue. Are these old projects accessible in any way? Thank you

 

https://blog.unity.com/games/upgrading-from-collaborate-to-unity-plastic-scm

There is a way to migrate collag to plastic, but you might have to hurry up, not sure if it's still avaible.
I did it around september