WireGuard Windows 0.6.1 - Existing tunnels disappeared and ZIP import not working

Hello,

We are experiencing two critical issues after updating WireGuard on
Windows (version 0.6.1):

1) All existing tunnels disappeared after update
- Previously configured tunnels are no longer visible
- Configurations folder appears empty

2) Cannot import new tunnels (ZIP file)
- ZIP config files are not visible in import dialog
- Even using "*.*" filter, files do not appear
- Files definitely exist in the selected folder

This issue is affecting multiple users.

Please check if this is a known issue or regression.

Thank you.