Web Blocking / Content Blocking stopped working?

I have multiple devices where Web Blocking on the Content Blocking page no longer works. These include Transit Duos, Transit Duo Pro and UBR Plus.

The settings disappear after refreshing the page:

Have these features been removed for certain devices or is there some special setting that I am missing? I have tried a couple of factory resets. I would note that Web Blocking still works on our Balance 310X. All devices are running latest firmware 8.5.0

I checked back from the devices, Transit Duo, Transit Duo Pro, and UBR Plus web filtering/content blocking are lite versions but Balance 310X is the full version. You may refer to the comparison table below.

Transit Duo, Transit Duo Pro, UBR plus

Balance 310X

Lite version

Full version

Thank you very much for that information.
I did some more investigation and noticed from the event log that InControl was making an update shortly after I had enabled the rules locally. I wasn’t aware that Web Blocking could be controlled by InControl. Problem solved.
Can I make a suggestion that a banner is added on the Content Blocking page as it is on the Access Rules page.

Suggest Peplink add the same InControl warning banner above this block.