Not trying to sway your final decision about OP, merely trying to add more depth and possibilities to be ventured [and perhaps a broader knowledge to learn] but... if OP [or some other players] consistently have different IPs, isn't it possible that they just happen to have a dynamic IP?

Was OP's original account also accessed from ever-changing IP, or is it a static one?

Oh, and please don't post in consecutive, you can reply to multiple user through multi-quote, and if you want to add something after you made your post before someone else made a post, you can add them through "edit" feature. Consecutive posting is frowned by the forum