Platform improvement suggestions

The design of the platform leaves a lot to be desired in my opinion, especially the "Teacher Area" section.

I don't find it ok that new users are subscribed by default to the daily newsletter and that there is not even an unsubscribe button in the emails.

I don't find it practical at all that teachers can't set their own rates for advertisements and have to send mail for that.

I don't understand why I was deducted 5,67 (!) credits for a so-called exclusive student, who didn't even reply to my mail.

Not least, every time I log in I get the message "Please prove that you are not a robot" before logging in, which is tiresome and time consuming.