My support license for Eduma theme expired 2 years ago and I can’t create new support ticket there.
I still believe it’s LearnPress problem since it occurs only in newest version of plugin. I can revert it back to 4.1.4 or even disable since I don’t have any courses now but I think it’s in your interest to solve it. For the sake of future customers.
It was working for last 2 years and now it’s not with LearnPress 4.1.5 version.