Similar issues that others have around channel recommendations

I downloaded and installed the WiFi Signal app today, specifically because I wanted the channel recommendation functionality. Once up and running, the app recommends that I choose channel 161 for my 5GHz network. Once I configured my router to use that channel, it now recommends that I use channel 153. I reconfigured my router again - now it’s recommending that I go back to channel 161! Consequently, the signal strength indicator has a triangle-exclamation symbol permanently. Seems kind of useless since it’s not indicating any helpful information.

CanoeTripper about WiFi Signal: Strength Analyzer, v4.0.2