devtrackers.gg
The Club Shop - like the regular Shop - currently refreshes once per day. If during the refresh you don't have a Brawler in need of Power Points, it will look like this - and tomorrow they will show.
We'll likely change this behavior moving forward now that you can store Power Points and always offer you Power Points. Will probably happen in the next major update (end of February 2023).
On the topic of Powerpoints, I have capped out on Powerpoints yet when I collect them from the Bonus Rewards track, they are not converted into coins but instead are lost. Is this intended behaviour?
Nope. It's a bug. Will be fixed with the next maintenance.