invalid charges

SR64

Since about last June I can't make a £3.50 purchase in candy crush.  I get a message saying an in app purchase has already been made and the app hangs.  I was then charged.  You will see that I no longer use the £3.50 option. It is now happening with a 79p purchase and again I am being charged.  This is clearly some sort of bug.  How can I avoid this?

SR64

the exact message is - after entering apps store p/w and confirming purchase

"this in-app purchase has already been bought.  It will be restored for free"

candy crush then hangs so I have to swipe to kill the app.  As I said restarting/clearing the cache makes no difference.

Tune_D

Have you checked for updates for your device (OS) and apps?

Check your settings for the Store too; try connecting and disconnecting too.

Do a restart and check if it does this again.