I have 4 people that made characters in a campaign I made. 3 of them can access the shared content and the 4th cannot. He sent me a ss, I can see on his screen the character he made, and I see it on my end in the campaign, but he still has no tabs along the top where all the content is. I resent the invite link, I turned campaign off and on, he and I both refreshed browsers, I checked the character he made it is complete, I logged off and on. What he hell is happening?

Also had him claim an Unassigned Character, also did not help.