Anons primary device for accessing QR gives errors on 3 browsers which all formerly connected. The secondary device connects easily, using a ms browser bundled with the OS.
Both devices use the same public facing IP to connect to a VPN.
It's a phenomena of the irritating and inconvenient kind, so if anons know what might cause persistent 404s on one device only please share the wisdom at QR
Blessing of truth on all.