Although there aren't any clear timelines established by Magento, there's an active GitHub issue on the topic. In short, the fix would take setting their SESSION cookie as SameSite=None; Secure to ensure
POST requests from outside the website domain are successfully transferring the session information.
To fix this issue, you’ll need to go to your Magento admin panel and set the Affirm Checkout Flow Type field Modal.
We strongly recommend making these updates in a staging environment before pushing them to production. If you encounter any issues related to the Affirm plugin, please let us know and we’d be happy to assist.
Updated almost 2 years ago