Hola David

We understand this specific content is difficult because of the different possible interpretations, with the nuance of being or not connected to the present. For a Spanish from Spain learner this is a more straight forward usage, however for Latin American Spanish learners the nuances get more complicated. What we've stated in this particular lesson is the most common usages of the perfect and the preterite tenses in Spanish, with a clear tendency to use the latter. We've also considered some specific cases where the perfect is preferred. In one of the sections we explicitly write that with adverbs "siempre" and "nunca" the tense used is the preterite in most parts of Latin America (not the perfect). This is the reason why the perfect tense is marked as wrong. Nevertheless, we have plans to improve this lesson to make it clearer, despite having written this lesson initially with consultation from a Latin American teacher. We understand that it's still difficult so we've planned to improve it.

Kind regards