I'm in the UK with English (United Kingdom) as my language, I went into admin settings and couldn't find EAP so I downloaded that extra file from the Norton website. After running it, it shows error "you do not have a valid registered license or product to participate in EAP" even though I'm logged in on Norton 360 with more than 200 days remaining on my subscription.
I'm on Norton build version 22.21.1.151 and on latest Windows 10 update, thanks.
I think you should first update your product to the latest stable version available, i.e. version 22.21.2.50. Then you will be able to participate in the Beta program.