[Resolvido] I try to translate a quform form and some of the strings are in wrong language

Background of the issue:
I am trying to translate a Quform form on my site using WPML. I installed the Quform WPML plugin and did the translation.
When i go to the string translation i cant change the language. it is greyed out.

Symptoms:
Some strings in the form are in the wrong language. The translation worked for one form but failed for the second.

Questions:
Why are some strings in the Quform form in the wrong language?
Why did the translation work for one form but fail for the second?