Quick books online data being not available to a particular user

Hello, krishan-gupta-tr. 

Thank you for reaching out to the Community. The possible reason why some users are unavailable to view company data is because they are set to Standard user with limited access.  

You can check which permission you were given to your team. Here's how:  

1. Go to the Gear icon.
2. Select Manage users. 
3. Under Users, you can check the roles given to them. 

Please visit this article to learn more about user types and permissions in QBO: User types and user permissions in QuickBooks Online.  

To manage and customize user roles, check out this article: Add and manage custom roles in QuickBooks Online Advanced. 

Please let me know if you have additional concerns about modifying your user's role in QBO. I want to make sure everything is taken care of for you. Take care always!