Tablet recognizes a strong wifi signal from the ATN, I put in the ATN password (as per instruction for ATN link). The Fire7 tablet then states its unable to connect to network. How do I correct this issue? It is frustrating for this was the purpose of buying the Fire 7, due to bigger screen and mobility. I was using my android phone for this but wanted a bigger view. I was able to upload the google play app without issue and it is working properly. Please help.