Перевод - Итальянский-Датский - non ti lascerò mai

Original form of translation:
"Jeg vil aldrig forlader dig!"

Corrected to "Jeg vil aldrig forlade dig!"

Hi, Anita.
I had my English translation of this text rejected because it read I want never leave you. and everybody said that the original means I will never leave you.. Isn't vil=want to in Danish too?

In this case, "vil forlade" is a future form of the verb "at forlade" and means "will leave".

Hi Casper

It can actually mean both "want to" and "will" (merely indicating the future tense).
But in this case, it´s clearly the future tense = vil (and "will", in English).
If you wish to say "I want to", it should normally be either "jeg ønsker at" or "jeg vil gerne" (desejo/quero/gostaria de). Note that it´s common to add the word "gerne" when you use "vil".

Ah, and just another little detail: You said you had translated it to "I want never leave you". If it were to sound correct in English, it should be "I never want to leave you". However, this doesn´t matter all that much in this case, because the correct translation is, in deed, I will never leave you.

Did this help?

Ok. Thank you both Iepurica and Anita.

Yes Anita, I translated "I never want...", not "I want never".