It does not matter which version you use. But you better switch back to the Community version 20. In that version your process look a bit like mine. I created on account on your like4like page and tested your case.
Process:

That process clicks any Like button on the focused tab. For me that worked on several tests.
The Click Like Button selector is:
"<html app='firefox.exe' idx='25' /><webctrl aaname='Like' tag='A' colName='Like' innertext='Like' rowName='Like' />"
You do not have to use the Attach Browser
. But I would recommend that if you use more than one Click activity.
You can find Studio and StudioX on the same page. It's a bit confusing as StudioX is currently just available on the non-stable release:
