Download the Source code (zip) above unzip then zip the trunk folder inside and upload under the add plugins tab in WordPress.
Nextflix Bif Thumbnails https://www.youtube.com/watch?v=9kT14LcVFd0
Please add any issue here: https://github.com/s3bubble/wordpress-plugin/issues
All examples can be found on our Documentation: https://s3bubble.com/documentation/
Rollback to the previous version if needed.