Hello @Sp Developments,
Since you still receive the same error message after following the troubleshooting steps suggested above, I'd recommend contacting our Customer Care Support.
They can pull up you're account, securely, and create a case or ticket ID to be submitted to our engineers for further investigation about this unexpected behavior.
To contact our dedicated support:
- Go to Help.
- Tap Contact Us.
- Enter Error message when receiving payment in the What can we help you with? field.
- Click Let's talk.
- Select Get a callback, Chat, or Call us.
Lastly, here's a few articles you can read for ideas about how you can manage your customers and sales transactions: Manage Customers and Income for QuickBooks Online.
If there's anything else that I can help you with, let me know in the comments. I'll be here to lend a helping hand.
