I registered yesterday and I could post couple of answers/replies but after a few hours when I tried to reply to some posts, it said that "your messages are held for moderation" or something similar. And they haven't appeared until today.
Please help me understand how this works, is moderation supposed to take so much time? (more than 12 hours)
Posts by new members are monitored more closely by our spam filter. So it's likely you had some that were flagged as spam. We manually review spam flagged posts and either approve them or delete them and contact the member to explain (or not, in the case of outright spam).
I looked at your posts that were flagged as possible spam. One has a website link, and two others had use of bolded text for some words in your posts. The reason for that is because lots of spammers use bold text in their posts so it's one of the variables the spam filter is set to apply to new members. After you have been a member for the required period to pass the new member status you should not have this happening. So for now try to avoid linking and using the bold text to keep your posts from being held.
Also, if someone can tell me, how long does it take before I can answer to PM I've received?
Just received another one today and I'm not allowed to reply.