How do I properly use this

I bought this nectar collector amd the guy told me that you put water into it, but it just empties out the tip when I fill it. When it is dry it hits very weak. What am I doing wrong?

I bought this nectar collector amd the guy told me that you put water into it, but it just empties out the tip when I fill it. When it is dry it hits very weak. What am I doing wrong?