Why lobby doesn't list all instances?

[Melodia]

Why does the instance queue lobby doesn't list all instances? For example I have a daily at "grimhorn scullery". That boss is too difficult for a glass cannon like FM to solo (no dodge/block and the boss uses unavoidable homing ranged attacks that kills my character in 3 hits). I've looked through the lobby's instance list multiple times, it doesn't list this instance, as well as a few other instances from previous areas. Yet it does list other small instances like Lakeside Cache, Plague Hollow and Naryu's Temple.

[Aliene]

Some are not made for cross server dungeons. You can do all the main story quests without any help even the ones in dungeons, just drop the dailli cause some times you get the dinamic quest.