Translation of tesauro

The machine arrived in Cuba at nine and it was already dark. The border control was nothing like the one in Mexico. They were communist and one could see the strictness and uneasiness of them.
Our link book file suddenly disappeared overnight, and the technical team had no idea why. We fixed the problem now. Please go to vocabulix and than press the menu Link Book. Do you see it now?
About the accents: This is not a mistake, it is on purpose. Please note that in Spanish some words have accents when asked in a question (I.e que, porque, qui...). Pay attention to the question mark.