OK, take a deep breath and relax a bit. We can't help you until you give us a bit more information.

First, you seem pretty confident that it isn't an electrical problem. Good enough.

You need to pull the inspection plate and see if it is indeed the linkage. If it is, see if the linkage just popped loose. You may be able to reconnect the rod if that is what happened. If not, you are going to have to determine which parts broke and replace them.

(My wipers quit once when I was in college and we were 90 miles from school, 5 of us in a 1960 Peugeot 403. Luckily that POS had a manual sunroof, so every couple of minutes my then girl friend, now wife, would open the sun roof, stand up on the seat and lean out and wipe the windshield with whatever piece of cloth we could find that was drier than anything else we had. The situation was so ludicrous that it actually was hilarious.)