Big-IQ: VS connection/pool stats visible, but Virtual Server health status not displayed

I have version 8.4.0 Big-IQ and 17.1.3 Big-IP VE(Azure). Required communication is flowing from what I can tell between Big-IP<->DCD and Big-IP<->CM and necessary ports open. However, when I enable stats collection, it comes back with 'Version: not available" for Stats Collection Agent. In the CM restjavad logs,  it mentions that Big-IP doesn't have version(8.1.0.1), so keeps trying to reinstall version 8.1.0.1 continuously. Although Big-IP clearly does have that version downloaded/installed from Big-IQ. I have other devices with same version of iapp.analytics and its fine.

Main issue is that we cant see Virtual Server health(green/red). Although when I go to 'Monitoring' tab, I can see Virtual Server/Pool connection stats once I 'Enable' stats. So stats are being sent from Big-IP VE.

I removed/re-imported services but that didn't help. Im not sure if I need to clear-rest-storage on Big-IP. Although Im hesitant to do that, since license is managed from Big-IQ. Last resort could be remove devices completely and re-add.

This never worked for this particular HA pair. Configuring stats collection is new for this pair.

Thoughts? Anybody have similar issue?