I used to work with co-edit with my team, but it doesn't work anymore. Everytime we try to use the same file at the same time we just keep receiving the conflict mesage, which only option is accept changes. We've already tested our internet conections and reinstalled the XD, but NOTHING works.
I've noticed that the save is delaying and that's probaly why we can't use it at the same time, but there's nothing wrong with our conections.
Sorry to hear you are having trouble using coediting feature in XD. We are unable to reproduce the issue at our end. We would like to know the OS and XD version of your machine. Have you enabled the coediting button while inviting? Is everyone getting the same message? Is it happening with this specific file or with all the files?