All my products and services are blank on old invoices and missing to select from on new invoice on my app, I also don't have any payment terms to select? Anyone else?

Thank you for contacting us, 2by2liverystable. I'm here to assist you in resolving the issues you're encountering while creating your invoice and processing payments.

We can perform basic troubleshooting steps on your mobile phone to clear any corrupted cache that is likely causing this behavior. After these steps, you'll need to restart your phone and open the QuickBooks app to view any recent transactions.

Here's how: 

1. Go to your device Settings.
2. Click Apps(varies by device).
3. Select the QuickBooks app from the list.
4. Press Storage. 
5. Click Clear data.  
6. Restart your phone and open the QuickBooks mobile app. 

I'll leave this material for you to learn more about the other steps that will help you as you perform the steps above: Fix common errors in the QuickBooks Online mobile app for Android.

To ensure the issue is resolved for you, please let me know how you get on after attempting the steps. Kindly respond to this post, and I will get in touch with you.