Aio Wireless to Reach All U.S. Customers September 15

I am currently using unlocked Tmobile phone on 60.00 GoPhone plan works great. Was thinking id Switch to Aio when they go nationwide but strangely they dont' support short code messaging=fail. I get alot of them the Free ones from UPS my bank hotel promos etc. Weird AT&T's own GoPhone & others let them through. Ugh it's always something.