Unfortunately that message isn't new, happened to my main last year. I bought a pet and it turned out to be active, TNT unfroze me when I pretended that I didn't know it was scammed but the second time it happened (I have shit luck lol) I got frozen and that was the reason. I can still make new accounts though without any problems after I waited like a month, are you getting frozen when you make new accounts on that IP? Maybe its not the same/they're cracking down.