WPML Language strange behaviour

Hello,
i’ve made a website using WPLM and 5 language, using a form for any differnt language. Every of them (should) send email to the recipients on my client, indicated in every single module. The system administrator email in WordPRess in the same recipients too, not mine but of my clients. Today, receving an email in Duetch from the website, I’ve discoverd that 2 of the modules (ES, DE) are not yet listed in the backend but visible, translated and working in the frontend. I’ve just re-created the missing one and saved it, but it suddenly disappeared in the backend. In the front end it’s still visible a module translated that keeps sending email to my recipient!!
Hope i’ve been quite clear in my description…
Anyone can help?

https://wordpress.org/plugins/contact-form-7/