Shattered Warpgate: how to quit campaign or mission?

I started a campaign and accepted a mission, but I’m not sure I want to play them now. How do I quit them (I guess I’m tired of looking at mission info on my HUD even when I’m not playing a mission). Thanks.

Unpin the misson from your HUD. In mission menu right bottom unckeck "Pin to hud"

Thanks for the tip. I figured that out, though unfortunately it turns into one more thing I need to do at the start of every session.

Yesterday I accepted a mission only to realize that I couldn't warp to Esamir because the Vanu were locked out of the continent. I proceeded to Amerish where in the middle of a battle a message popped up saying that the time limit had expired for one of the Esamir mission goals. Why did the game let me choose a time-sensitive mission knowing that I was locked out of Esamir? And why was it distracting me with an irrelevant message in the middle of battle on another continent?

Don't take missions seriously. And look at the world map before you accept a mission

Yep. Apparently the missions I signed up for have expired, so at least I don't have to keep unpinning the reminders from my HUD. Again, I'm not sure what's the point; I haven't been able to warp to Esamir for two days.