Just off the top of my head the "v" in there doesn't have a point on the bottom, which is one of the confusions my daughter has ("u" vs "v"). And I don't think the "n" needs the serif on the right foot, as that's not the "platonic" shape of a lower case N. I do appreciate that their lower case "a" is more like a handwritten one, as is the lower case "g".
I've been going through the Teach Your Child to Read[0] book, and it introduces a "learner-friendly" font, which actually helps. It has special glyphs for "th", for example, and other font tricks like making silent letters smaller, and different variants for the vowels depending on their sound. Eventually, those tricks are minimized and the kid is reading a normal font, though.
In other words, I'm interested in the idea of a font that's useful for early readers, but this font doesn't seem to be concretely designed in that way, and I'm put off by the vague "friendly" type stuff it seems to be focusing on.
[0] https://www.amazon.com/Teach-Your-Child-Read-Lessons/dp/0671...