I’ve just tested this and it’s working for me. But to be sure can you install this update: https://quick-plugins.com/quick-paypal-payments/qpp-update/
I am still having the same problem. I have backed up and applied the update. The item field never highlights showing it was missed, and never accepts any number in the field. Rolling back to 5.5.2 and everything works. So something that changed between the 2 versions.
To investigate this I need to see your payment page.
I can’t replicate the error so don’t know what to fix.
I can send you the info privately if you tell me where you want it sent
Send it to mail at quick-plugins.com
You can also see a test form here with the item number field all working: http://testblog.co.uk/paypal/
