Problems using Spotify's onscreen keyboard with Samsung smart TV

[user-removed]

Please help! I've been trying to login to my Spotify premium account (adding it to an existing account on the TV) on my Samsung smart TV, but every time I enter my username and then choose "done" to enter my password, the onscreen keyboard no longer works! It opens again like it should, but using the TV remote, I can't actually "touch" or "click" any of the letters/keys to enter my password, so I'm literally just stuck at that screen until I exit the app.

Has anyone else dealt with this??? Extremely frustrating, as I feel I'm missing something really basic.

Thanks in advance!