Hi there,
We hear you! We appreciate any kind of feedback as we want to improve this offering, so we are working on this with our product team so it will be easier to distinguish the differences with the product options. Although I must note that our WHMCS knowledgebase explicitly defines the differences between the lite and the PRO version (https://marketplace.whmcs.com/help/connect/kb/marketgoo/using_marketgoo_seo/marketgoo_plans)
The main goal is that you would encourage your users to subscribe to PRO and not be limited with getting started with SEO.
You may also opt to use a marketing strategy to which you can offer additional service like a Do it for me option to even boost your revenue stream.
If you have reached out to our support before, we highly recommend to keep in touch if there are any further feedback and issues you may have faced or is facing.
Feel free to reach out to us: support@marketgoo.com
Thanks and keep safe!