No problem. First step is to check on the GM layer as it sounds like there is the possibility of you accidentally shifted layers (either your pov did or the map itself). If it is not on the GM layer then you might have accidentally deleted the map and that would take rolling back your game which is a pro subscription feature. You could email the devs but with it being the weekend, response time would probably be not till monday or later. Three thoughts off the tops of my head. Check the various layers to see if it was moved. Email the devs for a rollback. Or Remake the map if it is truly gone.