Issue whit different contact forms HTML Email Templates

i have a site which is translated whit WPML in 3 languages.
I have 3 Contact Forms for english, italian and german, created whit the plugin Contact Form 7.
I use your plugin HTML Email Templates.
Now my issue:
when i send a a message from my Contactform in english the email reachs the destination, when i do that in the other 2 languages (de and it) the emails are not send.
I tested it, deactiving the HTML Email Templates and there were no errors.
Please, what can i do?