Multiplayer can't join to farm password required

[Adamvet]

Hi, at last I met problem when my friend tried join to my farmland. He could connect and we saw each other. He could walk across my farm but he couldn't join to me it means he didn't have any access to tractors or other equipments.
Whe he tried to join password was required but I didn't set up any password.
Even when I set up password he tap in and password was wrong.
It isnany solution for this? What we did wrong?