T.I. is not here for Donald Trump and his antics. T.I. honestly doesn't want any of his supporters to support Trump, and he doesn't want Trump supporters to buy his album. T.I. particularly took issue with Trump telling his supporters that he would pay their legal fees for attacking Trump protesters. According to T.I., that's no different than leaders of organized crime syndicates.
T.I. also said,
"F*ck you and f*ck what you stand for. Nobody who support me will support you. End of message."
Good for T.I.; it's clearly bigger than the money for him.