At the moment, this functionality is not supported.
Partner QR codes cannot be successfully scanned using the device’s default camera app — an error occurs during the scanning process. As a result, no redirection to the TWINT app or to partner-related features is possible.
Based on feedback received from our users, there is interest in supporting this functionality in the future, so that scanning such QR codes with the native camera works reliably and enables seamless redirection to the TWINT app (for example, to a partner feature).
by: Oleksandr R. | about a month ago | Tests Execution

Comments
Hi Oleksandr
Thank you for your feature request.
We have reviewed your message and are marking your request as: Candidate.
That means we will conduct further investigation and consider the feature.
Support will also reach out with questions to get more context.
Thanks again
May, Product Manager