WiFi has a setting for the country. When I travel I set mine to non-USA to let the WiFi work on channel 1 to 14. Did you try that?
Also, it's well known that from device to device you can see range changes. Move closer to the WiFi source.
I am currently traveling with my Samsung s9 plus phone and my Samsung Tab A. My phone immediately found and connected to it but the tablet can't find the same connection. Any thoughts?