Thank you for your feedback. This add-on is still experimental, so it is still in development. I am currently working on a new version that will be released in a couple of days that fixes most if not all of the issues you've mentioned.

When the new version is released please try again and don't hesitate to tell me if anything is still not working as expected.

PS: Thank you for all your suggestions, I've taken note of all of them!

Edit : New version is out!
Please give it a try and let me know what you think!