To translate the labels, there are some ways to do that:
Method 1: translate the plugin using the Loco Translate plugin. Please follow this instruction.
Method 2: translate the plugin by overwriting the template files. Please follow these steps:
- Create a folder mb-frontend-submission in your theme.
- Copy template files for Title, Content, ... that you want to change from MB Frontend Submission's templates folder to the new mb-frontend-submission above, keeping the same folder structure.
- Modify the new template files, change the field name to something else if you want.