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Incorrect username/password Error 6.4 on roku streaming stick

I recently downloaded Spotify on my roku streaming stick device, I do have premium at least until September, but it's saying my username and/or password is incorrect even though I know exactly that it is correct because using the same credentials on the online site/ iPhone app it works and I've tried several times each making sure there are no errors when I'm typing.

Things I've already tried:
Updating roku. (It is up to date)

Restarting roku

Logging out of everywhere on the Spotify site

Attempting several times to log in with the correct credentials
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