Yeah it definitely felt like him resorting to his manual of scripted responses on live chat, as if this problem was way above his level of expertise.

@smounche I'd since contacted TPlink customer support and the only answer he kept coming back to is a full factory reset of the router which I'm not willing to do. Even backing up and restoring after...

@js001 I've encountered exactly the same thing updating my routers firmware yesterday. I didn't even update the tether app I don't think. Web portal works fine. App says incorrect password everytime....