Welcome to the Pet Rescue Community
Do you need help with your game? Ask the Community for help.
When I had similar issues I came across this video which worked for me, it's made for Soda but since the messaging system is all the same in King i'm sure it'll apply.
Don't know about your case, but in mine I did have a habit of hoarding loads of lives and I think it did have an impact on it as since I've kept a (relatively) clean shop, I've no longer had the issue. Hope it works for you Kathryn!
https://www.youtube.com/watch?v=eoXtJPMIG6I
P.S love the top hat wearing kitty!