What loader are you using?
Ill break down my explanation to try and help out. If it fed 3 balls into the breech of your gun the settings on your hopper could be too high or your detents worn causing it to feed past your detents.
As for the noid clicking and nothing happening this could be due to a couple of reasons, the eyes of your marker could be dirty (especially if you have a chopped ball in there) or could be due to no paint feeding into the breech (due to the smeg in your hopper stopping paint feeding) turn your eyes off and it should fire air (and a
paint if your hopper still feeds) the other reason could be due to your tank not being screwed on fully but more likely your eyes being dirty.
As for your hopper being full of piant thats bad, a smeg in your hopper ruins the rest of the paint in there and if it comes out of the barrel I guarentee it wont go anywhere near where you want it.
Try cleaning your hopper and marker, following instructions in manual. then try screwing your air on and and turning your eyes off on your marer and see what happens. Then stick some paint in turn the eyes on and fire and see if it works. If in doubt of anything or it doesnt work take yourself along to BZ paintball in Stockton as they are Dye/Proto specialists and will sort it for you.