If I had to guess I would say it is because of your paid signature plus at least two pages of insubstantial posts. The two pages I looked at are very short mostly two (very short) sentences that really do not add to the conversation.
If you are banned for 60 days this is most likely not your first ban
Sorry pureelite, you are banned from posting or sending personal messages on this forum.
Insubstantial posts+sig ad & ban evasion-extended (60 days)
this is my first ban and i know it! i didnt get banned before so this is really sick and i dont think my posts were spam!!!
if you think this is spam then i should write a post of more then 500 words if that works