Not sure of your exact location but according to this Temperature chart for Israel it can be as high as low 100'sF and that is way too hot for C. pubescens to set fruit which are native to mountainous regions of SA.

Flower drop probable causes:

1. Day temp too high >95F

2. Night temp too low <65F or too high >85F

3. Too much nitrogen fertilizer

4. Too much water

5. Low light levels (reduces fertility).

6. Very low humidity (reduces fertility)

7. Poor air circulation (air circulation contributes to
pollination).

8. Lack of pollinating insects.

9. Size of pot

10. Too much mineral in feedwater.

11. Too much grower attention/anxiety.

I agree, if you can't find them some more shade, you will probably have to wait until things cool down a bit for them to reliably set fruit.

number 3,4,11 are most likely. the plant that set pods i forgot about it. and didnt water it as much, and added no fertalizer.11 is always a problem.