Not able to lock files by using git lfs

Hello,

I’m trying to lock a file in gitlab.com by using lfs and I can’t lock it.

I’ve followed the steps described here and here. No avail. Even though Gitlab.com recognizes the file as being handled by LFS no lock/unlock icon is displayed.

I’ve also tried unlocking it via the command line, it appears lock, same situation

Lock

Even SourceTree displays it as potentially lockable, nothing

I’ve also tried with a binary file, same results as with a text file.

I’ve locked the file and then commit, same result.

What am I doing wrong?

Any suggestion is welcomed.

Thanks!