In reply to Legs:
Hi Max, sorry for the late reply, only just noticed this. You can get feedback quicker in the future using support@rockfax.com
There's been a slight issue for some users with the latest app update. If you uninstall the app and re-install it it should be fine though.
Once it's re-installed go to Home > My Account then click on Restore Purchases. This should allow you re-download any crags you've bought before.
Cheers, Paul.