I agree. Very unprofessional!
If you want to disable additional thumbnails, you can use this plugin;
https://wordpress.org/plugins/disable-thumbnails-and-threshold/
Select all the options and ready to go!
Hi @frometa79 @evilmc
We apologize for the inconvenience.
Our team set an option to disable the footer on the settings page before releasing the previous version(4.0.2). You can disable the footer at any time. We always think about our respected users.
See here: https://nimb.ws/8VBRSz
Our team already released another version of the plugin ThumbPress (4.0.3). I request you update the plugin to the latest version. The footer issue is already resolved. Hope you won’t face further issues after updating the plugin.
Thank you!