This is a general concern.
I have a team using subscription plan and we highly reply on the file lock feature. The problem is, I realized when I update the software my account is logged out and lock feature is disabled, I expect there will be some other circumstances when my account will be logged out silently without any warning. For all my team members, I cannot expect them constantly checking whether they are logged out. When they are unconsciously using a non-pro version and edit files together, the majority of our work will be overwritten many times and will lead to a disaster.
So I want to make it clear: We need to make sure once the account is logged in, it will stay like that no matter what happens. Or at least give us a warning that we are not logged in. We cannot afford one mistake caused by our accounts being saliently logged out.