Hi Ezra, The flowers form before the beans. When the beans start to grow they’ll push the flowers away. You just need to wait.
The tomato leaves either turn yellow because of too much water or not enough. Since it’s so hot there I’m going to guess not enough. I cover mine that get direct sunlight all day with the black fabric that lets light through that you can get at the hardware store so that they get some shade for part of the day. Also, you can watch a YouTube on raising heirloom tomatoes on which leaves to trim away so that you’re plants are healthier and produce more and the best depth to plant them. One more thing, if you take good care of them over the winter they’ll produce even more next spring and summer.