There's been other threads in the past (with varying workaround success) but I want to resurface this since it seems Hilton has really updated their wifi such that travel routers no longer connect.
Hilton Waldorf Costa Rica, Slate 7 won't connect at all to Hilton wifi (my VPN is off, I've tried mac cloning to my phone where Hilton wifi works, I even called Hilton IT support to allowlist my router mac address and even though the agent wanted to try the system gave him a “device not supported” error when adding the mac address to the allowlist).
This Waldorf is a new Hilton property (only 6 months old), so it has the latest Hilton wifi system, which means as other properties upgrade their network (often a slow several year process), Hilton hotels will be basically unusable with glinet routers unless they have some aggressive masking built in.