Hello, I have a strange problem....
I have been using Joomshopping on Joomla 3 since 2019. Recently, I rebuilt the entire website on Joomla 4 and also installed the latest version of Joomshopping.
However, customers now always have the problem that they receive the following error message when paying with Paypal:
"This invoice has already been paid.
I had already changed the invoice number under Checkout. First to the consecutive number (the last order was 1563 on the old homepage, so I changed it to 1564 in the new Joomshopping), when that didn't work I changed it to an invoice number from 3000, but that didn't work either.
I should now know where I can find the error? Is Joomshopping not transferring the order number completely? Instead of "1564", only "564" or something similar? In any case, I can't explain where the error should be?
Joomshopping's functions are standard, I haven't changed anything in the Paypal plugin or the checkout...
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