Don't be surprised if most or all flowers or buds fall off until the fall, especially if your area is very hot. Rocoto types tend to prefer somewhat cool weather, so this is normal.
First buds already turned to yellow and fallen, but these still be green and get "fatter", looks like surviving buds.
Only God made me to put this plant near the vine (grapes), it is protected a bit, and also there is a shadow net. This is from some seeds a guy sent to me ("before THP era").
I have another 2 plants from legendary ebay offer from Peru, the one with 9$ and free shipping, these 2 plants are also in the shadow of a small tree.
Cheers RGHM1u20