To load the driver on Mac 10.15.7, you can try the following steps:
1. Instead of opening the download directly in Safari, save the download file to your Mac.
2. Locate the downloaded file and double-click on it.
3. If you receive a message saying it cannot be opened due to unidentified developer, control-click on the file and select "Open" from the context menu.
4. You may receive a warning, but by confirming that you want to open the file, you should be able to continue with the installation.
5. Follow the on-screen instructions to complete the driver installation.
Note: Make sure you download the driver from a trusted source to ensure the security of your Mac.