We are using Superlist with WPML (both latest versions).
Front End Submission on secondary language (Greek) causes an error for CMB2.
Please check you can not proceed to the next step with this error.
The error is:
Warning: printf() [function.printf]: Too few arguments in /wp-content/plugins/cmb2/includes/helper-functions.php on line 339
Attached files: CMB2 Error.png