Board Thread:General Discussion/@comment-107.77.89.97-20160914125846

I'm quite new to the game and am hoping somebody could help me with a question. When I try to combine a collection, I get a fixer pop up window showing me (for example) colored ribbon as a fixer. I have 28 of those in my inventory. If I touch the "take" button, it tells me I don't have enough rubies. So I have 2 questions:  Why would I need to buy what I already have, and how do I use the items in my inventory to combine/complete collections. Thanks for any help or answeres 