When you're unable to find new users while trying to add them to channels, despite having correct data and settings, the issue could be related to a few different factors. Here's a list of potential causes and solutions to help you troubleshoot:

1. User Activation Status

• Issue: The new users may not be fully activated or their accounts may be pending.
• Solution: Ensure that the new users have completed the activation process and their accounts are active. Sometimes users need to verify their email or complete setup steps before appearing in the search.

2. User Permissions and Access Rights

• Issue: The new users may not have the necessary permissions to be added to certain channels.
• Solution: Double-check the access rights and permissions for the users. Ensure that they have the correct roles or groups assigned that allow them to be part of the channels in question.

3. Search Indexing Delay

• Issue: The system might not have indexed the new users yet, causing a delay in them appearing in search results.
• Solution: Allow some time for the system to update and index new users. If the problem persists, try reindexing users manually if your platform allows it.

4. Filtering or Search Limitations

• Issue: There could be filters or search limitations in place that are preventing new users from being displayed.
• Solution: Ensure that there are no active filters applied in the user search field that might exclude the new users. Also, try searching with different criteria (e.g., email, username).

5. Sync Issues (If Integrated with External Systems)

• Issue: If your user directory is synced with an external system (like LDAP, Active Directory, etc.), there might be a sync issue.
• Solution: Verify that the sync process is functioning correctly. Manual sync might be necessary to ensure that all users are up-to-date.

6. Platform-Specific Issues

• Issue: There might be a bug or platform-specific issue causing the problem.
• Solution: Check the platform’s community forums or support channels to see if others are experiencing similar issues. There may be updates, patches, or workarounds available.

7. Cache or Browser Issues

• Issue: Cached data in your browser might be outdated, preventing new users from appearing.
• Solution: Clear your browser cache and cookies, or try accessing the platform in a different browser or incognito mode.

8. Network Issues

• Issue: Network-related issues might cause delays or prevent new users from being found.
• Solution: Ensure that your network is stable and that there are no issues with connectivity that could be affecting your access to the platform.

9. Permissions for Adding Users to Channels

• Issue: You may not have sufficient permissions to add users to the channel.
• Solution: Ensure that you have the necessary permissions or administrative rights to manage users in the channel.

If you've gone through these steps and the issue persists, you may need to reach out to your platform’s support team for further assistance. They can provide more in-depth troubleshooting and potentially identify any underlying issues.