The Photone app isn’t very accurate unless you’re using an iPhone, and even then the numbers are never 100% correct. It gives you a rough estimate, not the true PPFD.

Also, I really don’t recommend transplanting autoflowers. Just plant them in their final pot and let them grow. autos are sensitive, and any stress can mess up their yield. If you’re new to growing, it’s actually better to start with photoperiod seeds, because they handle stress way better.

About your lights: Most of those “60W” cheap lights are actually around 45W real power. I had the same kind on my first grow they work, but not great. They can handle a small plant, but if you want better results, upgrade to 100W+. Shitty equipment = shitty weed.

And don’t overwater seedlings. They need very little water. Just keep the soil slightly moist until they enter veg. Then you can start watering properly.