Group FaceTime Not Working with New Update

I have an iPhone 7plus and group FaceTime is supported on my device when the new IOS12 update came out (the update after IOS 12) and it worked up until the next TWO updates. Since I have updated to IOS12.2 I have not been able to use group FaceTime so I looked it up. I read a lot of articles that have been posted 2 days ago and 6days ago (after the newest update came out) and a lot of people are facing the same problem. All of my other friends have it so when we want to FaceTime together it was been preventing us from doing so. I don't even get the option to join on ANY of my devices and I have the new MacBook Pro 2018 so it is supported and i have been able to Group FaceTime before. Please help asap because I am not the only one suffering from this issue.