Thanks for all your time in getting the module reviewed. I have made all the ...

Thanks for all your time in getting the module reviewed. I have made all the changes mentioned in comment #2 and #6 except for the removal of the parent:submitForm. I feel that it is necessary and the drupal set message "The configuration options are saved" is not coming up if that is removed. Let me know your thoughts on this, please.

Refer: https://www.drupal.org/project/email_blocker/issues/3108214