The exceptions mechanism does not work at all Puntuado con 1 de 5 estrellas

even not the default exceptions.
Unfortunately the author does not reply on support emails.

Esta valoración es de una versión anterior del complemento (2.0.3). 

Exceptions work as designed

I believe you are misunderstanding what Exceptions are. When in the Exceptions tab, click the Help button for details. (I'm prepared to admit that "Exceptions" isn't a terribly good name for the actual feature. Happy to receive suggestions.)