Hi, Laszlo!
1. Our extensions is ready for GDPR!
Gridbox
1.1. Gridbox allows you to delete all Google Fonts and use local font files
1.2. Gridbox allows you to use source video files instead of video from YouTube
1.3. Gridbox plugin cookies allows you to add links to your privacy policy page, to which you should add what cookies are used and why.
Gallery
1.3. Gallery allows you to disable social sharing buttons
Forms
1.4. Forms allows you to add checkbox with "I consent to website.com collecting and storing my data from this form" with help of form field "Terms and Conditions"
1.5. Forms allows you to delete all info which were submited by customer, throught Forms admin panel (Submissions)
2.
To start editing the plugin click on the icon "Edit"
Let me know if you need more assistance
Regards,
Artem, Balbooa.com