As I know nothing about this issue, could you recommend a configuration for the GL.iNet GL-MT1300 router? Or could you link to resources that might help?
I’m not entirely sure how to apply this to repeater mode, even with the firmware version of 3.215. I guess I setup some advanced firewall rules, and that the TTL interface only otherwise applies to the “modem” mode.
For anyone else having this problem of difficulty connecting at a Hilton with the Captive Portal not appearing, what fixed it for me is to go to the VPN Dashboard → VPN Client → Global Options, and uncheck “Block Non-VPN Traffic”. I also had to set my WireGuard to disabled to get the captive portal to come up. You can turn WireGuard back on once you’re connected.