This is my previous post: https://www.bungie.net/en/Forums/Post/264289018?page=0&sort=0&showBanned=0&path=1
About 2 weeks ago i encountered an issue in which i was unable to join players due to NAT issues along with strange things such as me being told i was on NAT type 3 when i'm on NAT type 2. A week ago the issue was fixed and i was able to join people like normal, even people who i couldn't previously play with because of the issue. Today the issue is back just like it was before. I'm making this post just to say that the issue is back after you fixed it before, thanks.
Hi there, Thanks for reporting.
This link may be able to help with the issues you are experiencing.
[url]https://help.bungie.net/hc/en-us/articles/360049496751-Advanced-Troubleshooting-UPnP-Port-Forwarding-and-NAT-Types[/url]