Vindii,
It looks to me that you have underdeveloped dough and need more kneading time. I like to autolyse (let it sit) for 10 minutes after all the ingredients have been incorporated. Then I do two 5 minute kneadings on medium low that are separated by a 5 minute rest. Try bulk fermenting (in an almost airtight container) in the fridge for 20-24 hours, then bring it out for an hour before making dough balls. If your dough has not at least doubled after fermenting, your yeast is bad and/or you may want in increase the yeast %. Instant dry yeast (IDY) works well and does not need to be "bloomed" or "proofed" before adding it to the flour. I suggest yeast at more like .5% and your hydration % seems low for the high temps you are attempting to use. Try the increase in yeast and a hydration % of more like 64%