Driver and passenger doors will not open from the outside no matter how hard I pull?

Hi, both of my cabriolet's doors do not open from the outside. First, I started noticing that it got a little hard, so I just DW-40'd them and they worked fine for a while. Then the drivers side lock just popped off. The door cannot be locked anymore and then the handle would not budge.

then the passenger door, it was really hard to open but pulling on it, I mean tugging it with both hands really hard until the car was rocking side to side, the door would eventually open. The passenger door still locks and ulocks with the key, and both doors open from the inside just fine just not the outside. We end up having to leave the side windows unlocked.

Is this common for this year of cabrilolet? What can I do? Since the car is metal, it looks like it is impossible to take the doors apart.