A Hotfix for Version 3 Update 13 has released which fixes some bugs which were found shortly after Update 13's release it's now available to download using the in-sim update button. The new version number is V3 Update 13A Mar.25.2024. You must download this hotfix to play with other users who are running the same version of the sim. A full change log can be found here or by clicking on the change log button on the "About" menu in game.