Questione giuridica chiave
Whether the appeal was admissible despite lacking reasoning in the filing of 31 July 2013.
Decisione estratta
No. The filing contained no appeal reasoning and did not meet the requirements for a substantiated appeal.
Motivazione estratta
Under Art. 42(2) BGG, an appeal must state reasons. The timely filing of 31 July 2013 contained none, so it could not be considered.