Hi @Seema welcome back.
Can you share a screenshot of the error you are getting?
Did you set the server connection correctly?
These two articles may help you:
https://support.kobotoolbox.org/kobocollect_on_android_latest.html
https://support.kobotoolbox.org/kobocollect-android.html
If you need further help after doing what these articles offer, don’t hesitate the ask, community will help you.
