If you check at the Maple Achievement at tab Event, open it and you can view which 'rings' you need to collect. If you don't have it yet, it will be grayed out. I have 2 of 6 rings according to the achievement. These 2 rings were obtained a long time ago. Although I do want the chair...I don't like the idea we need to collect these rings, which has no use on my main.
If you are wearing items that 'summons' something beside your character (such as LGR, Sylph Ring, Weather rings etc), try to get to FM and unequip them there.
If you are in a map that is not a town, you will need to queue yourself out. The only one I know is do a Zakum Queue (try it even if you did the boss already), then talk to the NPC to go to El Nath town. Then you use Quick Move to move to FM. Take off all the items that has a summon effect and keep it unequipped.
You will be freely to move around and do everything.
Edit: Queue also works in Sengoku High Principal's Dojo.
Edit: Make sure you click FM in the Quick Move! Do not click Ardentmill by accident because of your habit going to that place.