If they can all see each other but not you, your files may not be overwriting in the installation process. When I installed the update, it asked to overwrite the current FH files and I clicked yes however it didn't do it. I had to completely remove and uninstall my previous version of FH and THEN install the update. Try that, I figured this out after having similar map problems c:
I have seen users and helped them with this exact problem, Bloo is correct.
I will advise to delete everything feral-heart related and do a fresh installation, sometimes things get corrupt or do not update, you may have the maps but something has failed to update along with it.
Thank you Bloo for clearing this up for the user, I'm just shedding some more light on the situation. :)