No clue ive had a lot of phones like that stop working when ppl dail *228 others happen after i do a ESN/MEID change, they work great for like 10mins tops then you just get a busy sound when you try to dail or recive a call, they get incoming text but thats about it, somehow i dont know what it is but ive been luck to even get a phone such as the EnVE to stay on crickets network and work right, not sure if it has to do with the MEID stuff, however your is differnt its just WAP so i guess all hope for you has not been lost lol
P.S i think when you did the 228 it might of reset the WAP settings etc