How do I resize my house I built?

Hey so im new to unreal engine used it for like 6 hours n
ow and I’ve built myself an old West Saloon but when i went in with third person I saw how HUGE it was and that I needed it to be smaller so I tried to scale it but what the 2nd image shows is what happens. If someone knows how I can scale it to be a smaller saloon. (I’ve put all of the blocks in one folder if that important)
( I use the “select and scale tool” up in right corner of game )

The too big saloon I want shrinked