It is not displaying anything in our forum 4.2.1
both in default style and customized style.
Uninstalled.

I'm going to update it soon, and I would have updated it months ago. Thing is, I've been busy IRL, and my forum also got hacked, so I have to work on that before I can work on UADisplay. Among other things, I plan on adding support for MSIE11, Android 4.4 KitKat, and some other stuff (I've already fixed support for the new WebKit/Blink Opera browser).

You have to enable the icons through those checkboxes in admincp, check the screenshot in this thread.

Work not for Windows 8.1

^^ Yeah, I'll be adding support for Windows 8.1 in the next update.

update ?

You really should try to read first instead of wasting people's time. See just above your post:

Some users said that they are using IE while it shows (mozilla) icon

Maybe the used IE11 which is not added to this mod?

Okay, I got my forum secured and up and running again, so I'll be releasing UADisplay 1.1.2 later this month, possibly next week. I'll skip the other icon sizes for now, takes too long to resize all of them and then fix them in the CSS. But I'll fix different icon sizes later on. Main priority now is adding more support for various browsers/OS. I've added IE11 and Windows 8.1, as well as Android 4.4. What else have I missed for the next update? Any new GNU/Linux distro with a new, unique user agent string, or all they all identifying as Linux and/or Ubuntu nowadays?

If anyone has PS4 and Xbox One user agent strings, please post them here.

Edit:

I found PS4's UA string.

This is the most important for us
Thanks for support

Windows 8.1

Mozilla/5.0 (Windows NT 6.3; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0