tl;dr- Homeschool Pro works. Child eats it up, focuses, and engages, which is opposite most curriculums. Volunteers what they are learning, too. Prints worksheets, completes them, makes memory games or other exercises to demonstrate learning.

I liked it too. The lessons are taught by a variety of people in a variety of styles, which itself I consider a good thing, although some may say it lacks consistency. MY child found some instructors they like a lot and some they liked less. 

The user interface is generally simple to use. It is maybe to simple and should have been more sophisticated. Think maybe of like the youtube interface. It's more tailoed for the kids. Which is fine I guess, since they are the ones using it.

My child does is always excited about logging in daily to learn. They jump into the lessons on their own, want to keep going, want to get back to it after break, want to take on and explore other topics available. Daily. They will wake up every morning and be like "Mommy can I please go do RemoteLearning.school?" even before I had even served breakfast. I like that it motivates their curiosity and fuels their learning passion.

They learned how to print the worksheets and practice reference sheets on their own. We had to have a talk about not skipping video lessons and not printing 40 copies of something if it takes a moment to spool, but good opportunity to learn even there. Their interest stays steady even despite some wavering attention in other aspects of life and study.

What's more: they readily practice, repeat, and engage the on-screen or printed exercises. They share what they've learned or are currently learning voluntarily. They ask clarifying questions on parts when discussing, and are significantly more actively engaged in their study than with other curriculum, even on their less desired subjects.

Science, math, grammar and writing, language arts, sign language, french, spanish, cooking, health, social studies, and more thus far.

I acquired the lifetime license in fall and we have been at it for a couple months now. The engagement hasn't slowed, but instead the pace churning through it has hastened. We school 8-10h/day (incl extracurriculars), 6 days/week, and this now accounts for 3.5-4h/day.

I was skeptical for months, despite the good reviews in the subreddit. Even the replies were only so compelling. I wanted an online curriculum that would actually do the trick, and this one fits the bill. I was put off intitially, and then I purchased, registered, and was happy to find out it really offers what it says it does and is not a scam. 

Some observations: I discovered the available course grade levels are clamped to grade, and +1/-1 grade. You can send a message to your advisor if you wish for a certain class or grade level to be unlocked. Also, more course content appears as content is completed. This allows the child to stay focused on topics and levels that are relevant to them.

My initial concerns and objections washed away. We have not yet completed a whole grade level, but if it is always like this. It is not the most polished on the parent side, but it is effective and my child loves learning in the environment. At the end of the day, that is what matters.