Why can´t I use pet coins to unlock next level? Pet coins seems to be useless!

Karin_L

Have not enough friends that are playing Pet Rescue to help me unlock next level. Should be unlocked after some hours or days! 

StuckInATree

If you're connecting to Facebook, there's no way to not have enough friends to help as you can join dedicated groups such as these: https://www.facebook.com/search/groups/?q=pet%20rescue%20saga