[ronzensci]

We have a banking website which refuses to login when I connect on the 5G Wifi but allows me to login when I connect on the regular 802.11 WiFi (non-5G mode). How does the website login know which WiFi speed am I connecting on?

[3np]

Could it be that one of the networks assign IPv4 or IPv6 and the other doesn't, and you therefore end up hitting different IPs?

[hoppla]

Perhaps if they try to call JavaScript functions that are not available yet… I would check the developer console for errors