So please, don't open an issue if you're having troubles with the application itself, we can't help with that. Here's the original repository of this app (wireguard-apple). But the devs there has disabled the ability to create issues. So we have no idea how to contact the developers or where to get help if the app doesn't work.
The MacOS version of the official Wireguard GUI app is only available for download from App Store. But that requires signing-in into an Apple account. And presumably you don't want to do that (we get you!). Or you want to get an older version of the app, which you won't find in the app store. In any case, you're in luck.
Mac applications are sort of like Linux's Appimage apps. They can be simply copied from one machine to another. So go and grab yourself a copy. See Installation.
The uploaded application files are unchanged and retain their original crypto signature. Here's the VirusTotal scan reports:
But you should re-check yourself. Don't download from unofficial channels without re-checking that it's not a blatantly obvious virus.
Download the application from the "Releases" section:
- If you have the OS version 12.0+, get v1.0.16
- If you have an older version (10.14 to 12.0), get v1.0.15
After the download, extract the application from the archive. And then move it
into global or local Applications directory.