Use your Mac in Virtual Reality
Control and monitor your Mac
Maximize your Mac performance
Optimize your SSD performance
The VR Desktop web page (https://cindori.org/vrdesktop/) asks for my email so that I can get updates on VR Desktop Beta releases, but it doesn't like my (perfectly-well-formed) email address -- it claims it's invalid.
I've had similar reports with exotic emails (addresses with numbers and such). Please send me an email via firstname.lastname@example.org and I'll make sure to include you manually.
Issue with the signup should be fixed now.