I'm sorry you are experiencing this issue! This should not be a normal occurrence for our app users.
We recommend that you uninstall the app and reinstall it, then restore your purchase to link your subscription back to the app.
If you experience this issue you can contact our support team at the link below for a quick response:
https://guitartricks.zendesk.com/
Please contact our support team if this troubleshooting tip does not work for you. They will be happy to assist you further.
If you have any questions, comments, or concerns, please contact us.