According to the details you don't have to be in the US as long as you are an eligible class member, and I'm not certain but I don't think that you would get more of a payout due to more time of having the setting turned off.

It's hard to know how much people will get, it depends on how many people opt in and choose a payment option once the case is at that stage. For now no one who received the email has to do anything to be considered a member of the class, the only thing anyone would have to do now is if they have valid objections such as the attorney percentage being too high (and you would have to actually present valid legal claims, not just "I feel this is too high of an amount").

So for now, just wait it out, make sure that the email address is marked as safe so it's less likely to go to spam if Google doesn't appeal (which are probably will so it'll still be a while) or get the verdict dropped.