An hour ago It was posted on the "Diggy Revolution" Facebook group that a fix has been released. You will need to close and restart your game.
If the problem persists, contact SUPPORT:
https://portal.pixelfederation.com/en/diggysadventure/support
Look half way down for support option.
On your game screen, choose the Settings cog (Mobile, upper left corner; PC, upper right corner)
If you're on an iOS device, try the SUPPORT link, but if you don't see any categories below the search box, then you'll need to email them.
support@diggysadventure.com