It looks like that you fixed the issues. But I am worried about using Toolset on other websites? What did I do on this site that screwed up everything?
There is no worry to use Toolset with other sites at all. Even if you delete the Toolset plugins, it will not delete the content like post types, posts, custom fields, taxonomies you created with your site.
Once you register site key by following the above Doc, it will allow you to install/activate other addon Toolset plugins and you are always welcome to create a ticket if you stuck anywhere.
We are morethan happy to help you with any of the issue.