Resolved
Overview of the issue
When attempting to translate an imported form from an Avada demo, a database error appears at the moment you send it to translation.
WordPress database error: Could not perform query because it contains invalid data.
Array ( [language] => en [context] => page-builder-shortcode-strings-2523 [gettext_context] => [domain_name_context_md5] => e0a153435c9cd9b92948687b1bdf06c2 [name] => 909afcc04bff47b1c2444ced06493e68 [value] => N��*.~����z���-��y��z{ [status] => 0 [translation_priority] => optional [allow_empty_value] => )
Workaround
If you are using an Avada form containing a Notice widget, try deleting it and adding a new one. Then, translate your form again.
Alternatively, create a new Avada form, as this issue seems to be exclusively associated with imported forms.