I had the same problem with my new TV. I tried a couple of different browser apps for my TV, but they all had different problems. I happened to purchase a firestick from Amazon during their Black Friday in July the day before my old TV died and I had to buy the new one, so when the firestick arrived I tried that and it worked without a problem. I think that the TV browser was written to always send a "carriage return" to the Web page when you finish a text field (which is a mistake!) and when you hit a CR on a Web page, that always activates the default button (which is "Login" on the TQS site). Then, the TQS site is programmed to clear out the username/password fields on a failure so there is no way to enter both. If TQS would update their site to leave the offending username/password fields filled in so you could just change whatever was wrong rather than starting from scratch, I think the TV browser would work because you could enter the username and let the login fail, then enter the password and let the login succeed.