All my invoices and customer list was wiped from my mobile QB today for no reason but the info is still there on my laptop. This means the two platforms are not in sync.

Hi longwang-boringt,

Welcome back to the Community. QuickBooks Online is a powerful program that's designed to help you streamline your work. I'll be glad to provide more info and make sure you're on the right track with achieving your QuickBooks goals. 

QuickBooks Online operates and stores data on the cloud. This means that your data is available to you wherever you have a reliable internet connection. Based on what you've described, I recommend checking to make sure you're logged in the correct account in the mobile app. I also recommend making sure you're connected to the internet when logged in the app. 

If you're still having issues, I suggest contacting our support team so they can deeper look into this. Here's our contact details: 

• Phone: Call us at 1-855-253-1536 from Monday to Friday between the hours of 9 AM and 8 PM EST.
• Schedule a Callback or start a Chat: click (?)Help in the upper right > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback or Start a Chat. 
• Social Media: Facebook, Twitter, and Instagram.

Let me know if you have other questions, I'll be one message away in case you need further assistance.