simple purifier controls

[moyer4487]

i have it in hotbar and i cant place it anywhere to get the purfier t o work. ive pressed every key and mouse button availble and nothing. for that matter i can't use the cup or anything i put in the hotbar or direct from inventory i can drop it on the ground but nothing happens i can only pick it up but i litarly cant use anything at all. what am i doing wrong? do i need a tool first before i can set an item i built without a tool on the ground? if so that is kind of silly. or am i having a glitch. i tried using a controller and same problem. i cant place anything and i starve or dehydrate to death the first day or the shark kills me because i cant extend the raft

[Xas]

Do a brief check on the keybinds, if any duplicate use,
to see if keys are affecting your control.

[Nekochan]

Already built placeables do not require a tool to place, it's a simple select from hotbar and point to where you want to put it, a green shadow means it can be placed there, a red means it cannot. Red is usually due to an obstruction or needing more space.

The cup requires it to be full of water to use, you must use the cup either on salt water (don't drink the saltwater) or on some liquid container like the purifier. My key mapping is E, so I just equip the cup, get close to salt water and look at it and it should say "Press E to fill up" or some such text, then you put the water in the purifier in the same way and retrieve clean water the same way from the purifier.

If this does not help you, what Xas said, check your key binds, failing that do a file integrity check on steam. If that doesn't work you might want to make a short video on what you are doing and paste a link in here for it or go to the support page and file a ticket.

[XistenZ]

There's also the occasional bug that you can't use something that went into the hotbar slot already selected. Try selecting different items in the hotbar then go back to the purifier or cup and try to place/use them.

Reloading the save usuallu fixes weird stuff as well