Hi Ricardo,

The unlimited (large) subscription cannot be used with the trial.
That's because the major cost of the service is the amount of Neural Machine Translation and the Large plan has no limit.

What I recommend doing is use the trial but limit the translation volume using a simple global rule: 
https://www.linguise.com/documentation/edit-translation-with-rules/exclude-pages-from-translation-using-urls/

Cheers,