Thanks for reaching out to us.? Our plugins are compatible with HPOS already. We have added the line of code to declare compatibility that will be included in the next update. We don’t have an ETA on the update but it will be soon.
Kindly note that if you would like a temporary solution we will provide you with a code snippet until we run our update. Please log a support ticket here https://wpwham.com/support/ and we will assist you further.
We cannot integrate it with any other plugins besides our own.
Thanks in advance, Megan WP Wham Support Co-ordinator