I have a Beryl-AX (GL-MT3000) configured as a travel router with a WireGuard VPN. I upgraded firmware and configured the router and all my devices before I left home for an overseas trip. Everything has been working perfectly at various hotels and Airbnbs using either direct ethernet connections or wifi repeater mode.
At my current Airbnb, everything connected easily a day ago using an ethernet cable to the place's existing router. I was able to stream using a Chromecast as well as use the Beryl's wifi on my laptop, tablet, and phone.
Today none of my devices had a connection. None of them could find the SSIDs of the Beryl. I plugged a network cable into my computer and pulled up the router's UX. The UX showed both 5Ghz and 2.4Ghz as both being active and enabled. But they were not broadcasting.
Note that I had made no changes to any device between yesterday when I connected all the devices and today when the SSID was no longer visible. So I rebooted the router. I rebooted my devices. Still, the SSIDs were not being broadcast but the router UX indicated they were.
I'm not sure what else to do. I'm thinking about doing a factory reset on the Beryl. Any other suggestions before I do so?
Well not easy to suggest anything with the problem description
A lot of assumptions to be made.
Router UX ... is the Unify express? Nice box, unknown to me, but I read after some search that it cannot use station mode for the uplink connect.
" How can that UX know about 5GHz and 2.4GHz being active ? "
The travel router Beryl needs to find your uplink router then, via wifi or ethernet cable. That seems not to be active "today". GL.inet could stop sending downlink wifi when there is no uplink. Depends on settings like Multi-WAN internet check.
What can be different? Overseas trip ... new in DFS area? Country setting on Beryl and UX and uplink router for different area's and using other 5 GHz channels?
DFS can be frustrating. (Is normally not found in 2.4GHz, but there Channel 13 and 14 are only usable for some region settings.)
DFS = Total silence before transmission. Minimum 1 minute (60 seconds!), but will be 10 minutes for weather radar channels, and multiple times 30 minutes if some real or fake radar signal is detected.
That (false) radar detect can kick in any moment. If it was not there yesterday, it could be there today.
GL.inet travel router is mostly not certified for DFS channels, but some models do follow the uplink router DFS channel. Totally unknown to me what that UX does with DFS.