Hello TJ,
I am sorry for the late reply.
Sorry for not being clear earlier. In order to re-save the settings, you need to click No and Yes again, so that the settings can get the value. It is a bug from our end and we already fix this and will be included in the next release. Thanks for informing us. I am very sorry for the inconvenience caused.
To do this you can configure "Send registration email to admin = Yes" in Components > EasySocial > Profile Types > (Select profile) > Registration (tab) > Send registration email to admin = yes .
Regarding "we are wondering if your system will handle 1,000 concurrent users and what we would need for a server to do such a project." I believe our system are highly likely able to handle many users.
If you encounter difficulties or this issue is still persist, can you provide us with backend access and ftp access as well so that we are able to assist you on this issue much faster.
Hope this will help.
Thanks.