Multiplayer Problem please help

I need help , me and my husband has for several of times tried to play standed deep together but everytime we are stuck on the sync and it doesnt move even 1%
I am living in sweden and he in usa does that matter?
What can we do to solve this problem? because we really do like the game
Do I need maybe a VPN? does that help?
if yes what do I need to do?

Hello Razsper, have you tried since yesterday’s update?
If you have a VPN it may be helpful for one of you to connect to the other’s location, but try yesterday’s update first.