I've finished the quest and done all 7 puzzles but i have 6 stones slate... can someone help me fix this?

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where is the entrance to the place to put in the slates?

i got 6/6 stones. but seem it doesn't unlock anything yet.
here are all the puzzle location to get those stones

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3 locations marked with a star in attached photo. (One star is on top the C in Chirai Shrine if you cant see)

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2nd day of the quest chain from the lady will unlock the feather gadget

i just realize there are 7 stone slate total

I found the location of 6 Stone Slate and 3 Star-Shaped Gems

You have to complete part one to get the feather gadget. I can't seen to fight the last stone slate. I'm 5/6

Please can anyone tell us how to get the feather gadget

I cant seem to figure out what you need to do to get the slate. What is this feather you are talking about?

Second stone plate location, feather on bird again.

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You need to do the nearby electro fairy first

I also know that you need to use the peculiar pinion, well I have it, but there's nothing. I really don't know what to do, either its bugged or somethingw

Apparently, you're supposed to do something with the bird statues right? but I can't interact with the bird statues to get those stone slates

https://puu.sh/IhYFO/044576b085.jpg found all of them

Stone slate location, at the bottom of Mt Kanna, there is a statue that needs to be activated by the feather. pt 2 of 2 for proof

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Stone slate location, at the bottom of Mt Kanna, there is a statue that needs to be activated by the feather. pt 1 of 2 for proof

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i think we still have to finish the quest, i believe it is one of those daily missions, where you have to come the second day to continue, or something