sender notification email

Currently no. You could set it for all of your WordPress install but that option doesn’t exist currently in the plugin. I will look into adding it though.

Thanks, one more question, Is it possible to translate the form-fields?

Hi,

Yes, it should be possible. There is a language translation file in place for the contest code checker.

I found that file, it’s called contest-code.pot. I translated some lines using Poedit and uploaded the new file, contest-code.po , but no translations are visible in the form after refreshing. Could that be because of Poedit uses .po instead of .pot?

Sorry for the slow reply. Did you install the po file into the plug-ins language folder? This is a good guide on how to translate plugins – https://www.wpbeginner.com/wp-tutorials/how-to-translate-a-wordpress-plugin-in-your-language/.