Board Game Arena

I have been hosting Yahtzee games with relatives, and the initial game starts up fine. When we want to play the second game together, I click "Play again" and the last couple times, the people with whom I have been playing click on something thinking they're accepting my game, but instead end up playing with a stranger. Same thing happened when I tried the "Rematch" button. A couple questions:

1) Since I can't see their screen, I don't know what they clicked to end up in a game with a stranger. Can someone tell me what they did so I can help them avoid this in future.

2) How can they quit the game they ended up in with the stranger?

3) Is there a seamless way to just have us all play multiple games with the same group?

I am very interested in this answer. I did it the more complicated way> Return to main screen and invite the same friends to the same game. Half the people couldn't accept because they were stuck in the old game and I couldn't remember how to tell them to quit the old game... but we stumbled through.
However, I have had the experience of trying to start a game with personal friends where a random person joined us such that one of my personal friends could not play. I used the chat to explain the issue to the random person and he said go ahead and quit the game. I did and then restarted using the "restrict table" feature to limit my table to my social friends and it worked. If you check the FAQs on penalties, that is the way to do it. If you just leave the game without asking or just abandon the game, the other players may kick you out causing a greater penalty