Installation and server related problems

Hello everyone, I am new to H5P and Moodle and therefore might not be able to communicate my problem properly. Unfortunately, I am not able to upload any content using the H5P activity (black Logo) option. There are a few examples that I can use but the ones I'm trying to upload are Image Juxtaposition and Find the words. 

What I do: add new activity → H5P content → upload an H5P content (I previously downloaded the examples from this page) → 'Validating H5P package failed, Missing main library @library

Hi Guys,

I have h5p setup and have created some content which works well the problem I am having is that the page load is quite bad. The h5p content is very slow to load or sometimes doesn't load at all. Is this a limitation of the h5p.org in presenting the content, is the wordpress plugin suitable for use in a production envirnoment? is there a way to improve the loading of content? What is the optimal setup for this to work as fast possible? Currently on a cloud server with very little use. Thanks.

I wish to trial the HP5 functionality in Blackboard Ultra documents, which I believe is done through an option to embed HTML (with a view to pushing the IT dept for LTI integration if I am happy with the experience). Is this possible? The guidance claims that you need a webpage with plugin to begin - I have no idea where to start with this. I do have a (free) wordpress account, but it is asking me to upgrade at significant cost to add the plugin. I don't like the idea of using the test area if it public. Are there any other ways I could do this (for free)?