Yuh app from Swissquote temporarily disabled Play Integrity API enforcement due to complaints from GrapheneOS users and is reimplementing their security checks with support for GrapheneOS based on https://grapheneos.org/articles/attestation-compatibility-guide. We removed it from the list of apps banning GrapheneOS.
See https://github.com/PrivSec-dev/banking-apps-compat-report/issues/509#issuecomment-2753783269 for details. They responded on the issue.
This is one of several apps which has recently stopped banning GrapheneOS due to the guide we provide on using hardware-based attestation as an alternative or full replacement for the Play Integrity API.
Apps enforcing enforcing a Play Integrity API check have nothing to lose by permitting GrapheneOS too via hardware attestation. You'll get positive reviews from our rapidly growing userbase instead of negative. GrapheneOS is much more secure than anything Play Integrity permits.