What does the company do well? I like it offers website crawling and checks for duplicate content. Their knowledge base is huge and you can find it throughout the Moz Pro dashboard when you need it most. You'll even find Rand Fishkin's videos that explain what the feature does, so you'll always learn something new while using the platform. When setting the campaign, you'll be asked to input 3 of the competitor websites. I find this feature quite nice, as you'll be able to track the progress nicely.
What does the company not do well? I dislike UX and it takes me a lot to find what I want within their dashboard. While their crawl index is big, it can't be compared to Ahrefs' or SEMrush's. What this means is that you won't get the complete picture when it comes to inbound links for your websites. The design language is not uniform, you'll occasionally find yourself lost or worse "Ooops, Sorry, something happened" message.
What do you wish you had known about the company before using? Moz is a great SEO knowledge source, but their marketing platform is not very easy to use. Their index is not very big and does not present the full picture when it comes to backlinks. The onsite SEO modules are quite good and I can recommend them for beginner SEOs.