Friend hosting a new "game"

[XQS]

Hello, my friend and I started a new game, building and leveling up our new market. He is the host and I can´t join the "game" without him being online. This is something the developers should look over, to make the game joinable without the host being online inside the game! Kinda boring when u wanna play and ur friend is unavalible.

[DDTNL]

Since your friend keeps the file which harvest all the store's data so far the only option would be to exchange the savefile which is located here:
C:\Users\YOUR-USERNAME\AppData\LocalLow\DDTNL\Supermarket Together
and it shall be pasted in your instance of that folder