In Order to Resolved this issue please follow the below steps mentioned below-:
First you need to check the Cg App version if the version is 12.3 then follow step 2.
Note down the student ID, Grade and Udise CODE and share with us.
Uninstall the app
Install the apk which link mentioned below:
https://drive.google.com/file/d/1pJDAYRNEOFZdFTjURfxNq_bZM6SZvQyd/view?usp=sharing
Once the CG app is installed, scan the license that has been shared with you.
Note: If the CG App version is 12.1 and still this issue is persists, please contact our Helpline team over Group