I was advised on OpenWRT forum to ask my question here.
I have a GL-AR300M-Lite at home, always switched on. My PC is always connected to it. To access the internet from my PC, I’m using my phone as hotspot (wifi): the router is a repeater (or bridge) of the hotspot.
The issue is that when I activate the hotspot on my phone, the router does not connect automatically to it. If I click “join” from the web interface, then it works: the password and SSID have been properly stored in the router.
I am using the latest released firmware.