I have built a website using Hemma Theme. Now I want to translate it using WPML. In the language editor I cannot see the text used in the 'block builder'.
I'd recommend to use Polylang to make your site multilanguage (and it's free!).
If you want to keep using WPML, you might need to play with settings to enable translation for custom fields, please check: https://wpml.org/documentation/getting-started-guide/translating-custom-fields/