The OP should know about this, and tell his friend not to post anywhere else with his alt account other than in meta. If his friend ignored him, then it was clear that it was a ban evasion [if catch].
The ban has been already lifted.
There must be another reason why it's banned, but spamming is most likely.
Posting an altcoin giveaway topic or replying to such a topic is against the forum rules and that's why the user in question was banned. Click
here for more information.
Well, first of all there was no need to appeal to unban the account as it was ban only for 7 days and would have been automatically unban after that time. Good that the account is unban before time but the account in question should be careful as next time the ban will not be of 7 days. It can be of 14 days or permanent if he did not follow the forum rules.