then why some were made newsletter?
Emails with invites were sent to all 2 (or more) star players as mass post. For reasons unknown, some invites were lost on the way - as those probably hit different spam filters. Each email has their own settings for spam filtering, and unfortunately we can't always push through those. We can keep trying though, but sometimes players themselves need to check how "effective" their spam filters are. Also good to check spam / junk box.