Sorry for the problem you are facing.
Please login to https://www.masonrylayout.com/your-account/ with your login details and please download the files from there. You don’t need to extract or zip. The download zip can be uploaded directly.
Please refer to this tutorial to upload the plugin http://www.wpbeginner.com/beginners-guide/step-by-step-guide-to-install-a-wordpress-plugin-for-beginners/ . Please follow the instructions under Install a Plugin using Upload Method in WordPress Admin Panel
If you still have the issue, please do let us know. We can setup it.