We had one room

We had one room in the house shut off from the eufy because it took a few days to finish moving the room around and removing books from the floor. The Eufy mapped the rest of the house last week. This week it found the one room.
How do we add that room to the map? I tried and tired and tried to name the room but the app would not allow it. Now it’s been removed from my house map. What should I do?

Have you tried deleting your current map and creating a new one with that room included?

That’s kind of a painful task. Would be fantastic if we could just combine the apps.
I’ve had to remap my house after some IT failure when everything was lost. Don’t know the cause of that.
But house is now mapped - over two periods, so I have two maps.
Would really like to join them up into one, but haven’t found a way how to.