Questione giuridica chiave
Whether the complaint should be entered after the ordered cost advance was not paid within the grace period.
Decisione estratta
The complaint cannot be entered because the required advance on costs was not paid even within the extended deadline.
Motivazione estratta
Under Art. 62(3) BGG, failure to pay the advance despite a reminder permits non-entry; the simplified procedure under Art. 108(1)(a) BGG applies.