Key legal question
Whether the appeal had to be entered into despite non-payment of the advance costs within the set deadline.
Extracted holding
No. Because the advance costs were neither paid in cash nor validly credited within the non-extendable grace period, the Court would not enter into the appeal.
Extracted reasoning
The appellant did not comply with the advance-cost order or provide the required proof of timely payment by bank or postal debit; under the warning and Art. 62 para. 3 BGG, non-entry followed.