hy, there are some strange thigns, but here is a siolution.
I installed SMF 2.0.15 , downloaded the Plugin (that is very fine)

but I did not get ist to work. I followed the manual installation hints, applied them also to local german files, but - no succsess.
What is perhaps imporant to mention, is, that I had changeded from http:// to htpps:// Maybe only there appears the problem, but take it as a hint, please.
If you look on
https://widgetmanager.mibbit.com [nofollow], you can get some information about the concerning content, but, where does than belong to??
O.K, looking to all parts of the package.
The important part is in the file Chat.template.php that you will find in the Templates-directory.
And there is the important part on the end of the file:
echo"
<iframe width=$width height=$height scrolling='no' frameborder='0'
src='https://widget.mibbit.com/?server= [nofollow]" . $server . "&channel=" . $channels . "&nick=" . $userchatname . "&noServerTab=false'>
</iframe></div>";
}
?>
Other than you can see on
https://widgetmanager.mibbit.com [nofollow], I had after the istallation noting other to do, than changing "src="
to
src='
https://widget.mibbit.com [nofollow].......
If you change in the downloaded Mod this littel part in the file Chat.template.php before uploading and installing it, I suppose, it will run from startup.
Regards and best wishes!
// Edit: If the Admiministration wants to split this up to a new thread, welcome, team.