@AdamJ2020 I have used the app before the update. It worked well. Have emailed TP Link Support, will see if they have any thoughts on it. I noticed the Tether app doesn't support V6 of the Archer A9....

Hi, I recently updated the firmware on my router. Since then I have not been able to login into the router via the Tether App. I am able to login into the web UI but only with my TP Link ID. I've...