We paid extra for reviews and other nickle and dime charges only for half of them to not work. Reviews of the chapter tests were coming back with server issues so our son couldn't even see the correct answers to questions he'd missed.
We paid for a digital certificate on completion, but clicking on the link resulted in a "invalid URL" error page.
Upon calling, we were informed that they don't even support WA except as instructional. Their certificate is useless for us. My wife and I tried to ensure we found a site that supported WA for our son. It was VERY unclear on their site and completely misleading.
Basically, find a different site. This one is horrible.