@Disappointed21 I don't even have any option for QoS. QoS settings just don't exist for me. I've tried factory reset and deleting the app. It seemed to work at first but when I logged in the Tether...

I have a different router (AX5400) and I don't even have an option to modify QoS. Accidentally turned it on with the Tether app and set a bandwidth. Now my internet is half speed and I can't change...