Key legal question
Whether the complaint was admissible despite non-payment of the advance on costs within the deadline.
Extracted holding
The complaint could not be entered into because the advance on costs was not paid within the extended deadline.
Extracted reasoning
After the request for a long extension was refused, a statutory grace period under Art. 62(3) BGG was set with an explicit warning of non-entry. Since payment was still not made, non-entry followed under Art. 108 BGG.