What happens on August 28th if

I have 3 cards added to Curve at the moment, what happens on August 28th when I revert to the free tier?

Do all the cards get removed and I have to add 2 back?

Is 1 of them removed, and if so which 1 and why that 1?

Nah I think, don’t quote me on this. Is at that time the application will get you to remove one of your cards. What one you pick is up to you.