I need help with 2 lasts conjuration

[twin zephyr]

Please guys help me to make the last achievement with 2 last conjuration.I don't know to find 2 lasts.Any idea?

[granite copper]

Check your maps for chests. It should say for each region, how many you have collected. For Hogwarts and Hogsmeade it should tell you when you open the map. For the World Map, zoom out as much as you can and then hover over each region to have a look at collection chests. Also, did you manage to get all butterfly chests and the ones in the vivarium? I think there's also some in the Depulso rooms that open up once you've done the Depulso room sidequest

[twin zephyr]

I collected all chests in the vivariums,Hogwarts,Hogsmeade and in the whole world.I did all the Depulso rooms.Maybe it's a bug?