I had 12 tokens. After the change to make the limit 8, I now have lost 4 of my tokens. This is a value of 20 gems. I sent a ticket to support 3 days ago and no answer yet. Will SP provide me with a 20 gem credit?

In the future, it would be better to give the players a warning. Tell us that you're making changes and that the new limit will be 8, so those of us with more can actually spend them and not lose them. This isn't a "free" thing. We have to pay for these.