Addon QR Bill: payment reference does not match with the iban type

Addon QR Bill: payment reference does not match with the iban type

I am using the Addon QR Bill 2.1.2 which I bought a couple of days ago. Unfortunately I am not able to configure it.
IBAN / QR-IBAN: Here I entered the IBAN I got from my bank.
BESR-ID: This field needs to be empty, says my bank («You need neither a BESR-ID nor a Reference Number»)
Use Reference Number not enabled

When I click [Preview PDF] I am getting this error message:

Es ist ein Fehler aufgetreten.
0 The payment reference type "NON" does not match with the iban type of "CH8321987654321098765".

The IBAN mentionned above is NOT the actual IBAN for data protection reasons.

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Aw: Addon QR Bill: payment reference does not match with the iban type



Use reference number - Iban or qr-iban.

Change configuration: Use reference number

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Aw: Addon QR Bill: payment reference does not match with the iban type

With these settings, I am getting an error
The server returned a "500 - Whoops, looks like something went wrong."

Aw: Addon QR Bill: payment reference does not match with the iban type

Use php 7.4
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enable debug mode joomla - error?

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Aw: Addon QR Bill: payment reference does not match with the iban type

new version
QR Bill 2.1.3

- added more information in log
- fix php 8 bug

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Now best use php 7.4

Aw: Addon QR Bill: payment reference does not match with the iban type

I installed QR Bill 2.1.3. Now the error message is
Es ist ein Fehler aufgetreten.
0 Class 'TCPDF' not found
This is with PHP 8.1. Same error with PHP 7.4

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Aw: Addon QR Bill: payment reference does not match with the iban type

1. Install Update TcPdf
2. Intall QR Bill
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https://www.webdesigner-profi.de/joomla-webdesign/shop/special/update-tcpdf.html
installed?

Aw: Addon QR Bill: payment reference does not match with the iban type

Ok I did so and I can report now some kind of success.
There are 2 PDF files being sent by email:
- Invoice
- QR Payment slip

Well I do not mind, although it would be a little bit more perfect if the payment slip was in the same file as the invoice.
But what strikes me is that the invoice now consists of two pages: first a blank page and then the invoice on page 2. Or is there perhaps a connection? Was the intention to include the QR payment form in the same file as the invoice and something has gone wrong?

Aw: Addon QR Bill: payment reference does not match with the iban type

Your use original script for genereate pdf. (or yout create overrite pdf)
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Send me admin login for test.
(forum privat msg.)

Aw: Addon QR Bill: payment reference does not match with the iban type

The issue seems to be resolved now. The first page of the invoice is no longer empty. There are two separate attachments being sent to the customer
- the invoice
- the payment slip
I guess this works as designed.

The cause for this issue might have been an extraordinary large number of files in the «tmp» folder. The folder names seemed to be related to the previously installed Joomshopping add-ons. This means they were not automatically removed after installation.