Yes, Big Red, they are kind of right.
If you go Arena in a not-so-popular game... simply make an effort to wait; or stay nearby, in case the game starts, hoping there will be a sound notification.
And even if you are expelled... playing 20 fast games will get you back to 100 Karma.
80% is not the end of the world...
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My issues with expellings are:
•
Arena: sometimes... the
sound notification does not come...
I was once watching YouTube in another tab, on laptop, expecting that the sound will happen once the Arena game starts (the tab was next to the YT one); but nada...

Next, I found myself expelled; but in that case, it was not my fault.
•
Simple games: (I THINK THAT FROM THE TIME THE SYSTEM GOT UPDATED) A lot of people after pressing
ACCEPT, are not getting into the
game page without refrehing.
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A lot of people experience
game-start bugs (especially new people on the site), and as a result, they get expelled.
I used to send them the link of the game in PM or in the game chat (to click it and then press the red button
GO TO GAME) and tell them to learn to refresh a game page, when/if they feel something weird is happening; but it doesn't always work.
I wish there was something constructively done about these bugs, because they are a lot, frequent, problematic and hopefully solvable.