Hey Rabex ,
Thanks for reaching out. Buttonizer is GDPR compatible as you can turn off loading in icons 🙂
If you already have FontAwesome on your site, make sure to go to the settings in the editor, then go to
Icon library and disable
Import icon Library.
This should disable loading in the icons on your site using Cloudflares public CDN and you can use your own source.
Let me know if this helps 🙂