Transparency mode can be only enabled on your gear only if the battery is above 20%.
You canenable the Transparency effectsfrom Windows 11 tweaks -> Personalization -> Colors.
An outdated Windows version or older Graphics driver is another common reason behind this problem.
Lets check for and roll out the latest Windows 11 updates that probably have fix for this issue.
Update Display drivers
Outdated or incompatible graphics drivers can cause issues with transparency effects.
Lets disable power-saving modes temporarily to test whether they are causing the issue.
If they are, youll have to remove any recently installed apps or programs to fix the issue.
Lets Optimize it