Good to know they don't answer these... =/ Good News is someone does have the answer to this problem!
Jaillin
gaia_crown
Please see this I've found a solution for now
The button to Use Make it Pour is there--it's just not showing. It's some graphics limitation--my laptop used to do that when I was trying to buy Monthly Letters long ago--but you can still make it work.
Click the Make it Pour and it shows the little window--press your Tab key and watch the lower left corner and it shows a url (gaiaonline.com/inventory etc) then press Tab again so it says "gaiaonline.com/inventory/use" and hit Enter.
It'll use the item since the url exists to use it, but the graphic for the button isn't there.
I hope this works for everyone else~!
gaia_crown