Hi Marceau, glad to know that the problem is solved. I wish I was able to give an explanation of what is going on. But I have no idea.
I've been testing and retesting, but I'm unable to reproduce the problems you are experiencing. Everything seems to work perfectly on my side.
I try to make corrections completely "blind". Having no idea if it has any impact on the problem or not.
I've tested on chrome, firefox, logged in, not logged in, premium, non-premium, different times etc...
I am not experiencing any problems.
I'm still looking.