Please follow the steps below to convert wireguard config files. The config files will start working after this conversion.
Right-click any config file and click on "Open With".
Click on "Notepad"
Copy all the contents from the file.
Paste it here: https://setup.spidervpn.org/wgconverter.php
Click "upload profile"
Copy the new data. Open the same config in notepad again. Delete all data and paste the newly copied data and save the file.
Import the newly updated config file to tunnel and it will start to work.