I subscribed with my google but it doesn't work on my app. It says "subscription error". It works on my computer.

Hi there, 

Glad to have you join the Community. QuickBooks is designed to be an easy-to-use program. It's vital you're able to use the app without running into issues. Rest assured, I'll be happy to help so you're on the right track. 

In order to troubleshoot this issue, I recommend uninstalling and reinstalling the app. This is a great way to troubleshoot issues that may be affecting the app. By reinstalling the app, this ensures you're on the latest version of the mobile app. 

Feel free to keep me posted on how you make out. I'll be one message away.