I just bought a GL-MT300N-V2-2e8 and I successfully connected to the USB port a Huawei E8372h-153 wingle (wifi-USB) that is recognized as Tethering and, when connected to a power adapter, as wireless repeater. I also checked a ZTE MF833U1 (USB Modem) recognized again as Tethering. I also have an old TP-Link MR3420 with ROOTER Firmware and both modems works perfectly connected to the USB. I can also connect the GL-MT300N-V2-2e8 to the TP-Link MR3420 as wireless repeater and it works fine.
What I cannot achieve is to use the hotspot from my phones (Huawei P30 pro and LG G7Thinq android 10), that works great when used with the PC, with the MT300N-V2. When I scan the wifi it finds the hotspot created and let me insert the pwd but it runs trying to connect for a while and then it says Time Expired. Is there any other parameter that I should check/modify maybe with luci?
If I check the phone hotspot connection with the PC I notice that the security type is WPA2-Personal and that cryptography type is AES. Is it that that might prevent the connection with the MT300N-V2?