Sounds like it’s an issue with your router configuration and NOT your steam deck. If you have tethering on your cell phone you can use it temporarily to test if you get Wi-Fi that way, though I wouldn’t download anything over it if you have a data cap.
Since it sounds like your ISP has complete control of your router I would call their customer support and let them know you have a device that cannot connect. Most likely they’ll either do something like a factory reset on the router or ask for specific hardware information about the device (like the MAC address) so they can check the setting and ensure it isn’t blacklisted or something.
Theoriginalthon@lemmy.world 1 year ago
If it works fine on other networks then it’s your router provided by the ISP that’s the problem. If you can try setting 2.4 and 5Ghz networks to separate SSIDs with different passwords. I’ve got a couple of devices on my network that refuse to work if the networks are combined. You could try a different WiFi access point, an older unifi can be picked up cheap on eBay on if it’s just for testing. I was having similar issues with a Nintendo switch whilst working away, the hotels WiFi was just messed up