Kernrechtsfrage
Whether the constitutional complaint was admissible despite the complainant's failure to pay the required advance costs within the extended deadline.
Extrahierter Entscheid
The complaint was not entered into because the advance costs were not paid or duly evidenced within the non-extendable deadline.
Extrahierte Begründung
After a reminder under Art. 62(3) BGG, the complainant neither paid the advance in cash nor at a post office for the Federal Supreme Court nor produced the required payment confirmation. Non-compliance justified non-entry under the cited provisions.