SoundTouch App will not connect SA-4 amp successfully
I have an SA-4 amp with SoundTouch adaptor that I use to drive speakers in my garage. I recently updated my home wifi to Google Nest Mesh with an access point on that same end of my home. I have successfully added all systems but the SA-4. I have an SA-5, LifeStyle, SoundTouch Stereo JC, and Cinemate that work fine.
The SoundTouch adaptor shows a solid white indicator light and I see 'Garage' in the Google Home Wifi list after re-adding it but the SoundTouch App will always say 'Search for Speaker' for this product.
I have re-added it more times than I can recall and rebooted the amp. It even went through an update today when I rebooted it, which led me to believe this time may be different. No dice.
Any steps that I am missing?