RBR50/RBS50 Disconnecting

I’ve had an RBK50 set up for almost 7 years now, running with pretty much no issue. A few days ago we noticed devices connected to the satellites were starting to lose internet connection. A look at the network map and the satellites themselves showed they were connected, and no light ring on the physical device. Service would drop for a bit, then come back up, repeat.

Yesterday, after googling around, I decided to try rolling back the firmware to 2.7.5.4. Successfully did it for all the devices, but then the satellites absolutely refused to connect to the router unless they were hardwired. 5G backhaul would just show the satellites alternating between Config Sync and Disconnected. So I reluctantly restored the firmware to 2.7.5.6. Satellites did not connect for probably upwards of 2 hours, and right before bed I noticed they were suddenly back on the map.

Now this morning, things seemed to be going ok, but now the satellites seem to be dropping again (purple light ring and red on the network map), and even the router seems to be going down on occasion as my laptop, which is usually firmly latched on the router as the closest device, is losing internet intermittently.

The network map in the app doesn't match what's showing in the admin site doesn't match what the satellite light rings are showing. For example, right now, Satellite 1 shows no rings (aka all is good), the app shows red bar, and admin shows Config Sync. Satllite 2 shows purple ring, app is red bar, admin shows Good connection. Make it make sense.

Obviously this is not a tenable situation for the household. I’ve read the RBK50 is end of life, and it seems like this firmware isn’t doing any favors for the system. Any suggestions to try to resolve or am I destined to head for Costco (and maybe see if they’ll accept a return)?