Well, I assume you are running Windows 10 1903?
If so, that is why. MS has made changes that caused the taskbar icon issue and stardock is working on a fix.
There are several threads on the subject.
thank you for the quick replay, i hope stardock fixes this soon
There are many great features available to you once you register, including:
Sign in or Create Account
Return to the WinCustomize homepage.
CursorFX is a utility which allows you to have much more flexibility in the cursors
you use to interact with Windows. CursorFX users can create and use cursors that
look and feel far superior to anything you've ever seen before! Best of all, it's
really easy to create your own super-charged cursors!
Customize Windows with additional styles beyond light and dark mode
Stardock DeskScapes extends Windows 10 with the ability to run spectacular animated wallpapers (Dreams) on your desktop. Choose your Dream from our extensive library to personalize your pc.
IconPackager is a program that allows users to change nearly all of their Windows
icons at once by applying "packages" of icons. A package of icons contains
icons to replace most of the common icons on your Windows PC.
Icons for applications and folders.
Rainmeter allows you to display customizable skins on your desktop, from hardware usage meters to fully functional audio visualizers.
You are only limited by your imagination and creativity.
Rainmeter is open source software distributed free of charge under the terms of the GNU GPL v2 license.
Show off your favorite desktop configuration by uploading a screenshot of your desktop!
SoundPackager brings customization of your auditory experience to Object Desktop!
Users can now choose from "sound packages" to enhance their Windows desktop
experience. Over 30 different system sounds are supported; unique new Stardock Design
sound packages are included with the package.
Microsoft Windows® 8 is shipped without the "Start" menu. Stardock heard the cries from Windows 8
users. We put the "Start" menu back in Windows 8. We accurately recreated the most used desktop
feature billions of users depend on every day and packed it with additional functionality.
The finest collection of desktop backgrounds on the Internet!
WindowBlinds changes the look and feel of your Windows desktop by applying visual
styles to your entire Windows environment. When a visual style is applied, they
change nearly every elements of the Windows GUI such as title bars, push buttons,
the Start bar, menu and more.
Winstep Extreme is a powerful suite of applications that merge incredible usability and performance with breathtaking eye candy. Add your own Menus, Docks, Tabbed Docks, Taskbar and Widgets with this Windows User Interface Replacement!
View a list of all of the different galleries available in WinCustomize, which you
can then browse individually.
Explore all available galleries on WinCustomize.
This option is only available for subscribers of WinCustomize. If you are a subscriber
it will allow you to select which categories you would like to see in this menu
from a list of all galleries available on the site. This information will be stored
on your account for all your future visits.