There is a current study going on that I just learned about, that I DESPERATELY want in on. I just installed Mozilla Nightly today enrolled in the shield study, and added that extension. OS is Windows 10 Pro 64 EN US 1809. I beta tested for Microsoft all consumer and server Operating Systems since 1996. I no longer test Windows 10, as it is the last consumer (home, pro, and enterprise editions) that Microsoft is going to put out. According to them, all features, fixes, improvements, and changes will be made through Windows Update to Windows 10. I am testing Server 2019 but not with Firefox(never run a beta on a beta OS). I also have been testing iOS for Apple for over a year(iPad based). I learned through privateinternetaccess.com(I have not subscribed yet, but providing a particular test is successful, I plan to) that Firefox Nightly supported ESNI which cloudflare DNS Servers support. Can anyone give me a link to opt-in to the appropriate study?