Checked online solutions. None of them have worked. Windows 11 Pro.
Hello.
Try the following:
Step 1: Search "Bitdefender" in Windows Search Option.
Step 2: After the Bitdefender app comes in search result, right click on it, hover to select "Open file Location" by left click.
Step 3: This will take you to a shortcut of the app. Now right click on that shortcut and go in its "Properties".
Step 4: Under the Properties tab you'll find that the app icon is missing. There is an option to "Change Icon", left click on it. Then select "Bitdefender" icon.
Step 5: If you're already running the app, then the icon will still appear blank. Close the app from the taskbar. Then reopen and it should be displayed properly.
Regards.