I know this isn’t a dick swinging thread but I’ve not had a single problem with RTV all season, aside from getting my account locked due to accidentally being signed in two places.
Like you I had the 'Blocked' issue, back on 22nd August.
Since then I have 'ONLY' accessed RTV on the laptop connected to my TV via Edge browser & strictly stayed away from 4 other devices and 4 diff browsers & the RTV app.
As a result, since then, as previously, my game day experience has not given me 1 second of grief.
Today I logged into RTV 1 hour before kick-off, watched 2 videos before Emma Dodds came on.
Today's game, including the pre-game, H/T & post-game was THE best RTV I have experienced in over 10 years.
I had my game-day 'shit-show panic attack' missing all but a few minutes of the first half that was ... entirely my fault - I won't let it happen again.
It takes a little work to find a setup that works for individual Bears but RTV are not responsible for your connection/buffering issues ...
PS ... best advice I can give is - don't leave it to game day.