First things first: there is a problem with the registration procedure. My regular email address at gmx.com was rejected and the one I have just created at 10-minute mail is accepted...

Perhaps something to fix...? Or something I did wrong, I don't know.

I am not familiar at all with the Internet (and forums in general).
Well, what is to say. I am a middle-aged man and a scientist with more questions than answers and I try understanding people in order to be of better help.