How to download version 5.6.4 help

https://www.ads-software.com/plugins/contact-form-7/advanced/

you need to scroll down at the end of the website you’ll find drop down menu where you can chose former version to download

I can highly recommend this plugin: https://www.ads-software.com/plugins/wp-rollback/

I also downloaded the WP Rollback plugin to get rid of this update. Very easy and convenient. I highly recommend it.

No other plugin is actually needed. You just install the former version like any other plugin. Then you will be asked if you want to replace the old plugin with new…thats it.
Or you delete eg with filezilla the plugin folder so you can install new.

Page link: https://www.ads-software.com/plugins/contact-form-7/advanced/
Direct link: https://downloads.www.ads-software.com/plugin/contact-form-7.5.6.4.zip