Sent an friend keeps getting "Invite error."

Plex Media Server
1

Server Version#: 3.104.2
Player Version#: 1.16.4.1469
Hi,
My friend has an account and is logged in but no joy in the invite scenario.
Is there another way for my friend to get access to my media?
Thanks
PF

2

Have they tried accepting using the hosted version of Plex Web?

https://app.plex.tv/desktop