"if you could help me to know why I am not generating resin, I thank you."
90F is way too hot man... can you turn your light down? I doubt you need all 1000 watts for that small of a tent.
5.5 PH is also too low for soil growing... I'd aim for 6.2-6.5.
Substrate and solution temps are a bit hot as well... I'd try to get them closer to 70F.
Buds are still pretty immature looking so it might be another couple weeks before crystals really start stacking up.
Hope that helps a little 😅 good luck friend!