re; The owner of the site got an email from a member who already had an entry, but when she tried to make updates to it and save them she got the error.
Do you know which user so I can check that user? Can I get access the the webhost control panel so I can use phpMyAdmin. That will make debugging the actual link issue far easier/quicker.
re: How do you remove the link?
Right now, the only way is to use the WordPress function delete_user_meta() function. What I did on you test account was create a snippet that simply called that function with the test user’s WordPress ID telling it to delete the
connections_entry_id user meta key.
re: I saw that you ran the S2Member snippet code to reset roles. Before you ran it were you able to update the test entry or did it work after you fixed the link issue?
Running this snippet did not correct the issue, unfortunately. What I did to remove the linked did the trick.