Bug in Comodo Online Security browser addon for Firefox

I am using Windows 10 Creative Update (64 Bit), also I am using Firefox v63.0.3 (64 bit). I added Comodo Online Security (COS) from Mozilla Addon’s official website
Also I added Internet Download Manager (IDM) latest build addon
Now the problem is COS trying to download “ctrl-06-22-url-db.zip” and IDM everytime showing this message after start Firefox browser (appearing in screenshot). But I am not facing this problem with Chrome, Opera and Internet Explorer.
Please fix this problem.