Gen 3 controller will not connect to network after power outage

My Gen 3 controller will not reconnect following a power outage of about 24 hours. I have tried resetting wifi but no luck…will not get past first quadrant light flashing white & red! Should I try removing controller and readding? Would not be to upset losing settings & data if I could just get it working again as I figure I can just add all info back manually (is there other reason to fear losing settings & data?). Need to water yard as I just overseeded!