1. I did message Theymos, but I got no answer
2. No sorry I don't know the nature of his IP. I will ask him about his ISP.
3. No he lives in the US and I do live in Europe.
4. This is already his 4th or 5th account, but he never posted anything. He has 4/5 accounts with zero posts.
1. Your PM probably got ignored by Theymos as he says he doesn't want to respond to PM regarding this kind of topic
4. It's because those account were used in the same network, which got blacklisted for being malicious.
This is not one of the cases where a noob is talking back to a veteran, but:
He was blacklisted since day one. He used his normal home internet to sign up and got instabanned. He tried and VPN then and got banned too, but to this day he never wrote a message or made a post.
So maybe his home IP is blacklisted for some reason, what shall he do?
It's because even his home network are using public IP that is assigned by his ISP.
That public IP probably done something bad in the past for the system to blacklist it.
Honestly, your friend should just pay up, it's usually only a few cents requires to whitelist the IP back, rather than spending your time PMing Theymos in a hope for an answer.
1. It has only been a day but it will probably be ignored nonetheless (especially since a mod has already posted here and not offered anything without paying the fee).
4. Multiple accounts can be used on this forum. I acquired a few accounts from loans that I just held onto and leave stagnant.
Request a new IP from his ISP also. A blacklisted IP here might mean it's blacklisted elsewhere - a mere phone call and they should switch it for free if they're a good company.