Hi Shivam
I am Dave, an Independent Advisor, I will help you with this . . .
Is it definitely Windows 10 Pro Education that was previously installed on your PC and not just the pro version?
If so:
Disconnect totally from the Internet
Open the Settings App (Gear icon on your Starr Menu)
Go to Update and Security - Activation
Click Change Product key
Enter this generic product key: 8PTT6-RNW4C-6V7J2-C2D3X-MHBPB
When prompted, click 'Activate Product'
If the above does not work first time, try again . ..
Note the generic key will cause Enterprise to downgrade to the Education Pro edition, then your own legal licence will activate automatically after you restart (not shut down) your PC