Hello there, @sannyc.
Every penny counts when running a business, and I can see the urgency of having this sorted out as soon as possible in QuickBooks Online (QBO) to get you back in working order.
In the meantime, I recommend having your customers perform some troubleshooting steps. If they encounter any error message, let them follow any instructions they see. However, if there aren't any steps, I recommend following these troubleshooting steps:
- Clear their web browser cache.
- Right-click Review and pay in the invoice email and copy the URL. Open a web browser and paste the link into the address bar. If the link still doesn't open, try another web browser.
- Make sure their web browser is up to date.
QuickBooks Payments works best with these web browsers:
For detailed information, kindly visit: What to do if your customers can't pay their invoices online.
Moreover, I'll also share this link where you can search for articles that can serve as your reference to guide you in managing your invoices and payments in QuickBooks: Invoices and Payments Help Articles for QuickBooks Online.
I'm looking forward to getting this sorted out. Feel free to leave a reply if you require further assistance with managing your invoices in QuickBooks. The Community team always has your back. Have a good one.
