Hi,
thanks for your post, and sorry for the trouble.
The reason for this is some HTML tags around the table Shortcode that sneaked in, in particular an HTML <pre> tag.
To fix this, please go to the "Edit" screen of the page and switch from the "Visual" to the "Text" editor. There, you should see your Shortcode surrounded by that mentioned <pre> and </pre> tag.
Please remove those, so that the Shortcode is on its own line, and so that there's an empty line before and after the Shortcode.
(Now, you will then notice that the Responsive Tables Extension won't be particular helpful on this specific table, as it's not really a data table.)
And thanks for wanting to donate and for the rating, I really appreciate it!
Regards,
Tobias