@Jortt#194070 The QR code in your screenshot is malformed. It doesn't include a valid version number of the EPC QR code standard.
The raw data inside your code is:
BCD
1
1
SCT
RABONL2U
Maatschap 71C
NL17RABO0129837644
EUR2020.7
2020-023
If we fix it like this:
BCD
001
1
SCT
RABONL2U
Maatschap 71C
NL17RABO0129837644
EUR2020.7
2020-023
Then the bunq app can scan it no problem. (The version number is in the second row and it can only be "001" or "002".)
Edit: Make sure to adhere to this specification when creating QR codes https://www.europeanpaymentscouncil.eu/document-library/guidance-documents/quick-response-code-guidelines-enable-data-capture-initiation