We are really sorry for the trouble for the widgets, you need to add it one by one again.
And about the Information boxes and other you can get it in the documentation for how to make them and the documentation topic named as Introduction to HTML Snippets, so we hope that will be helpful to you, if you face any problem then please let us know.
You will get all the version of the theme in mail but you need to download latest version of the theme and install in your dashboard and our latest version of theme is 5.0.0. We hope you understand.
Please let us know if we are understanding you fully or if perhaps this is not what you meant.