This is not much help, but just a comment for the record: I experienced something like this about a year ago, when Wikitree made that type of strange linkage all by itself. The profile manager of the linked person was quite upset about it. A few days later I was about to attempt a repair, but found the problem had disappeared with no record of anyone having done anything to fix it. I don't know if your problem is similar, and the advice in the other answers looks good. Good luck!