I used vive pro eye + facial tracker, both of them are working.
Just share my setting:
1. Check two Framework: "SRanipal Lip Framwork" and "SRanipal Eye Framework" are enabled.
2. Check the settings of two scripts for Avatar "S Ranipal_Avatar Lip Sample_v 2" and "S Ranipal_Avatar Eye Sample_v 2"
Hope this can help you.