It might not be right for you (and it wouldn’t be for me), but there are various ways to put an overlay on a site when not logged in. See the “call-to-action” (or CTA) discussion here, eg:
1 Like
It might not be right for you (and it wouldn’t be for me), but there are various ways to put an overlay on a site when not logged in. See the “call-to-action” (or CTA) discussion here, eg: