All invoice, customer details, service are blank after using the app for a couple years. Do i have to re-enter everything and start over?

Hello snellweldingc,

Thanks for connecting with us here. 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. 

Based on what you've described, I highly 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. I also recommend making sure you're logged into the correct company as that may be the reason why you're unable to see any customer data on the account. 

In case this issue persists, I encourage you to contact our support team so they can assist you further with this. Here are our contact details: 

• Schedule a Callback or start a Chat: click (?) in the upper right in QuickBooks Online > enter "Contact support" > choose Contact Us > provide a brief summary > select Let's Talk > choose Get a callback or Start a Chat.
• Social Media: Facebook, Twitter, and Instagram.
• Support hours are from Monday to Friday between 9 a.m. and 8 p.m. ET.

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