You and two others (Peterson-7675, McMillan-2746, Crackett-3) registered or changed LNAB after 18. apr (time of last dump).
So you three are getting message "Your WikiTreeID does not exist.Status is updated, but correct it next time.", but status is recorded. Just ignore the message. After next dump it shouldn't show anymore.
I corrected the reports, so you three are also in correct team.