I had the same problem and same message. Now, this has changed and when I try to enter a new game, here called "NewgamecazauxIdontbelieveitexists", I get this:
Error: You may not edit NewgamecazauxIdontbelieveitexists, because this (MS) is a preexisting submission that you (jean-louiscazaux) are not the author (duniho or ) of. If you chose the same name by coincidence, please go back and enter a different name.
I've made several tentatives. Apparently, I cannot enter any new game.
I had the same problem and same message. Now, this has changed and when I try to enter a new game, here called "NewgamecazauxIdontbelieveitexists", I get this:
Error: You may not edit NewgamecazauxIdontbelieveitexists, because this (MS) is a preexisting submission that you (jean-louiscazaux) are not the author (duniho or ) of. If you chose the same name by coincidence, please go back and enter a different name.
I've made several tentatives. Apparently, I cannot enter any new game.