Would appreciate it if anyone can point me in the right direction.

I'm trying to install Duress on a fully updated Pixel 4a and running into an issue.
See images: and
I'm unable to enable it under Accessibility settings. Is there any way to change/allow this? I've searched through everything I can and can't find a way.

I have an older Pixel 2 that I now use for testing and it installs and runs fine on this device. This device is now unsupported by OS updates. I can't remember its running version but it's the latest up to the point where updates stopped.
Here's how the same settings look on that device.


Any help is greatly appreciated.

Well, after some digging have answered my own question.
Settings > Apps > Duress, then on the top right corner there's the 3 dot menu. Enable the Restricted settings there.