incubator temperature

I bought a new Chickcozy 25-egg incubator, after doing lots of research on it. Preparing the incubator for eggs, I followed the instructions, but the temperature in the incubator won’t go above 99.3. It’s been warming up for several hours. We moved it to our living room, on top of an armoire to...

I need some advice or perhaps the green light go ahead. I made an incubator following the instructions on this site: https://www.hobbyfarms.com/build-your-own-egg-incubator/ I didn't make the wooden box. The interior of my incubator looks almost the exact same except I added a small USB operated...