Cannot change username because of 'inexistent' registry tags

Username change denied because of non-existent registry tags

On gitlab.com I’m in need of changing my user. I’ve both personal projects and projects which I contribute to. However as I try to change my username the system tells me I cannot do it because there are personal projects which contain container registry tags… which in my case there is not even one using the container registry.

I also have ownership of a group and I’m a member of other groups but even in projects of those groups there is not a single tag registered.

Any ideas on what could I do to solve this problem? Thanks in advance.