Reached the Free Storage Limit on a deleted Project


I am using the free plan which have a storage limit on projects.

Recently I had a project where this limit was reached and a warning popup on all pages of gitlab in this namespace. So, I deleted the project at all but this warning on screen keeps showing.

Also, the project’s url in the warning is something like

I already waited a few days to see if this could be cleaned up meanwhile but no luck.

Can someone help with this?