That nailed it. Problem solved.
Its strange that even admin can have lower trust levels (But that’s another story, and also I’m sure, like all other things of discourse, this too has solid logics behind this setup of TLs).
To reiterate for anyone coming to look for similar/same problem: Even admins can have lower trust levels. So go to your preferences and click this ‘Admin’ button:
And then check for the Trust Level. It should be same or higher than what you’ve setup in the Who-Is-Online WIO plugin setup.
Thanks again. Its all wonderful.