We've had more than a few signups recently that mention being invited by a friend.
Unfortunately, they are hard to distinguish from spam.
If you have a friend you would like to invite, please use the invite people function which you can find here: https://socel.net/invites
This will ensure invitees can complete the signup process.
Socel is a place for animation professionals, freelancers, independents, students, and fans to connect and grow together. Everyone in related fields such as comics, illustration, and video games is also very welcome. As an implementation of Mastodon, Socel connects you to almost two million users around the globe as part of the Federation; a network of independent social spaces communicating with each other.