Divi Booster 3.0 upwards includes support for translation via WPML.

Here's how to translate the some of the settings.

Translating the Divi Booster Footer HTML

The Divi footer HTML feature can be found at:

Divi > Divi Booster > Footer > Replace footer links with this text / HTML

To translate it:

1. Enable the feature and enter the untranslated version.
2. Save the Divi Booster settings.
3. Go to WPML > String Translation
4. Select strings within domain: admin_texts_wtfdivi
5. Locate the string named: [wtfdivi][fixes][067-edit-footer-html]footerhtml
6. Click the translation link
7. Mark your translations as complete and save
8. Re-save the Divi Booter settings

Translating the Divi Booster Top Header Text

The Divi top header text feature can be found at:

Divi > Divi Booster > Header > Top Header > Add text to top header

To translate it:

1. Enable the feature and enter the untranslated version.
2. Save the Divi Booster settings.
3. Go to WPML > String Translation
4. Select strings within domain: admin_texts_wtfdivi
5. Locate the string named: [wtfdivi][fixes][116-add-text-to-top-header]topheadertext
6. Click the translation link
7. Mark your translations as complete and save
8. Re-save the Divi Booter settings