To resolve the issue with activating DIGIPASS after reinstalling it, follow these steps:

1. Check the Provisioning Activation Count:
- If you've previously activated DIGIPASS and then uninstalled it, the activation count may be exhausted. Check if you need to reset the activation count to enable a new activation. You can find more details about reseting the activation count in this article - learn more.

2. Verify OAS Policy Restrictions:
- Ensure that your OAS (OneSpan Authentication Server) policy allows for DIGIPASS activation for the device you are using. Sometimes, policies are configured to support only specific DIGIPASS types, which can prevent activation - learn more.

3. Consult the Activation Information:
- Access the Activation Information tab within the application for specific instructions or error messages regarding your activation issue. This can provide guidance on what may be preventing activation - learn more.

4. Unlock Your DIGIPASS:
- If your DIGIPASS has been locked due to multiple failed attempts to activate, you will need to unlock it. Look for an option labeled "Unlock your Digipass now” on the login page or an associated link. Follow the prompts to unlock it and try activating again - learn more.

5. Follow Proper Reinstallation Steps:
- Ensure you have followed the complete reinstallation and activation instructions as outlined in relevant user guides or help PDFs. Rechecking these steps can clarify any missed configurations during the reinstall - learn more.

If the problem persists after following these steps, consider reaching out to OneSpan technical support for further assistance.