Michiel,
I tried removing the plugin and reinstalling it but it will not activate, I get the following message:
Database update has failed. Please make sure, that database user, defined in wp-config.php has permissions, to make changes (ALTER TABLE) to the database.
So I have restored my site from a backup.
This plugin works fine if I use wordpress as an app on Azure but not if I use the bitnami image of wordpress.
Thanks
Steve