After looking your post history I can say you are probably banned for following reasons
1 You are spamming bounty through your alt account as
@tomahawk9 already stated in above post
2 Ban Evasion :- Your this alt account
https://bitcointalk.org/index.php?action=profile;u=1323200 is already banned and you are using this account. I found this alt account information from your bounty report where you stated your previous work.
25. If you get banned (temporarily or permanently) and create a new account to continue posting / sending PMs, it's considered ban evasion. The only exception is creating a thread in Meta about your ban.
3 Plagiarism is the common reason for banned. I am not bothered myself for searching it because above two reason are enough.
I really need this account for my work that still in progress.