vcam doesn't show up for 5.5?

Vcam is working perfectly on 5.4 installed on the same PC. But 5.5 is no good, it doesn’t show up in the live link window.

I have tried enabling:

all live link plugins,
all virtual production and virtual camera plugins
apple ar kit

I have also double checked the IP address and set frame buffer pixel format to 8bit rba.

I have also turned off all vpn

Please let me know if you know a fix! thanks!