Camera offline shows -90 code

Camera was work fine at home on wifi - we are now 150 miles away on trip and camera will not open on Verizon smart phone - it keeps saying offline - and showing -90 code. I have tried everything in app - cannot fine how to get off line or how to open on my Android phone. The camera was fine at home and the blue light was on - I tried to restart camera on app but nothing happened - I have taken phone off Wifi - but camera will not reconnect to my phone. Any help is appreciate.