If its any consolation on the wifi issue, I doubt its channel related. My controller disconnects from wifi a lot at random and I’ve done every possible thing to try and fix it over the past few years and it still disconnects. Seems like a poorly performing wifi adapter. Wish they had an ethernet module option.
I would contact support first for that power issue. The power cycling could just be a faulty power supply. You may be in luck, because that is probably what’s causing your wifi problem. If you have a volt meter you could check it to see if its output is what it should be.