Just being registered doesn’t remove the ads and as Ray already said “members that are active” don’t see these ads.
You need to be “trust level 3”, which you are getting automatically by reading, posting, replying, …
These are the most important factors:
- being registered for at least 180 days
- visited our forums at least on 30 different days within the last 180 days
- replied to at least 20 topics
- viewed 20 topics within the last 180 days
- read 50 posts within the last 180 days
So I assume you are not falling into one or more of the above categories.
But most importantly:
Did you already donored some sperm to them and how much litres? 