Today I am on the first day out of the free trial period, but three days ago I registered the MLO 2 as Pro. All the warnings messages no more appeared, and all was ok before today. Until yesterday I worked with the Lock Profile activated (a Simple Passkey - a number of 4 digits to give to access the app).
Today a warning appeared after I gave - as usual - my Passkey to access the MLO 2: something like 'Trial period expired; the Lock Profile will be turned off'. Ok, I then tried to set again the Passkey and MLO 2 accepted this. I then thought to have survived to a little problem, but at the next access MLO 2 gave me once more the same warning, and again disabled the Lock Profile feature.
I think it is a little bug. Is it someone of you that experienced the same as me?