Greetings 94cavi welcome to the Forum.
Those little squirter's are really prone to stop up, darn um!
You might pull the hose off of the tip (both of um) and turn the washer on for a little, just to evacuate any debris that may have accumulated in the hoses.
Then, if you have a Wire Brush, pull one of the wires out of it with a pair of Pliers, and "rod" the hole of the tips out with it.
Push the little wire down into the end of the Tip to push any debris back, then back-flush it with water.
Have a good Day !
S.W.