Load it up with food .... and wait.
When we moved into our house, I decided to put a stand out, with several feeders hanging from it. The feeders remained full for aaaaaages, nothing came. It must have taken several weeks (poss even a few months) before they started coming. All it takes is for 1 or 2 birds to discover the food and start feeding .... trust me they'll come ..... eventually.
Maybe you could put some bright/shiny objects out near the food, that may (or may not) attract them ??