What went wrong with my account because I have been on a Jr member position and have opened my profile today when it has changed to a newbie, what's the problem???
This thread belongs to meta. There are similar threads like this in there as well.
You were demoted because theymos implemented a 1 merit requirement to rank up to jr. member. You can rank up again if you can get 1 merit.
Read nore about new merit and rank requirements here:
https://bitcointalk.org/index.php?topic=2818350.0