Hi I've got a R710 operating in standalone mode. 2.4Ghz Radio is solid but 5Ghz Radio keeps dropping, the SSIDs are not broadcast & when I check the Web Interface all the 5 Ghz have no Bssids but wireless status is up & broadcast SSID is Enabled. After a few minutes the SSIDs are broadcast & the BSSIDs are listed in Web Interface.?
Sorry, I dont' know what MBP stands for, but I looked up specs on "Ubiquiti EdgeRouterX" that says they make passive and PoE models. On a far chance, if you happen to power your AP from this device, and all the other ports too, could our AP be losing power from the ER-X such that it's 5G radio blinks? Not sure, just an idea. Your AP support info logs might offer some other insight into what's happened.