Hi there!
ACF Support Team here, Thanks for reaching out with your query we would be happy to assist
Yes, the ACF plugin is fully compatible with PHP version 8.1. However, your code might not be, so we recommend testing PHP 8.1 version in a staging environment to ensure everything works as expected before upgrading live environments.
If you need further clarification, please create a ticket using our support form and we can look into it further.
