Greetings @wins23
I recommend you as first thing to check war mode, you must have both war mode off or on if you prefer, also, in case both of you are playing in war mode off/on at your choice, may happen sometimes there is more then one phase for balance the players population in that zone, in case you may get phase swapped you can simply fix it by relogging both you and your party member or disbanding the group and inviting your friend to a group again, doing that will swap your party member in your main phase.
Best regards
Game master Mngwa.