Hi Matthew.
Welcome to WikiTree.
You can go to that profile and ask to be added to that person's Trusted List. The person who is the manager of that profile should be able to merge the profile(s) you are inquiring about. They will of course probably add you to their trusted list, but they may not. You can also send a private email to that person if they are an active member. If not that, then ask again here to see if one of the more experienced WikiTree members can do it for you. If you have any other questions, please let us know.