Board Game Arena

Hello all,
Just played a solo game and I could not figure out how to deliver silver to the merchant buildings to complete them. I tried selecting my silver in my player info panel, tried using my trade commodities, amongst other things and nothing worked. Perhaps I am simply not understanding a rule or missed a button? Any help is appreciated!

At top left of your farm (where it says 'Your farm' ) there are some icons telling you how many coins, VP and tokens you have. To deliver silver you must first click on the coin icon - I think it has a blue square around it in the delivery phase indicating it's something you can deliver.

Thanks, that was helpful for me as well. My brain blanks on the blue outlines for some reason unknown to me. Maybe that childhood alien abduction has something to do with it? Who knows, but thanks for the help.