Flint AX won't let me into hidden wifi

Hi, I regrettably installed the latest firmware upgrade and it completely screwed everything to the point that I’ve had to use the physical reset button several times. The most persistent issue right now is that I can’t get back into my 5Ghz wifi network after setting the SSID to hidden. I manually input the correct name for the hidden SSID along with the correct password and it always says wifi name not found. Right now I’m on the non 5Ghz public SSID and concerned that changing anything could cause the same effect, meaning another physical reset. Any advise will be much appreciated. Thanks.