There are some issues with the new version:
- Only static pages can be selected from the dropdown menu on the settings page.
- Instead of the slug of the selected page its position in the dropdown menu is saved in the database file.
- In the if conditon to determine the selected page the slug of the page is missing.
There seems to be something mixed up from different versions. For example the file plugin.php on GitHub shows the date 2018-04-24 for the update, the file in the release archive the date 2018-05-02.