Cant access other planets after online play

I played online and was paired with someone many missions above me. Now when I restart it wont allow me to access all the planets I can only go to Sanctuary or Eden. What gives this is stupid? Perhaps they should have spent more time before releasing this.

You still have to complete the missions you didn’t do. But when you catch up to the missions you did with that other guy, you will get a prompt “would you like to skip this mission”.