Whichever channel you pick, the reply comes from the same workshop at Pacellistraße 10 in München-Altstadt-Lehel. During Mon–Fri office hours we usually answer within a few hours; the 24-hour figure is the outer edge, not the target.
Best for anything with an order id. Attach screenshots if a payment page looked off.
PhoneMon–Fri during office hours. Voicemail outside; leave the number, we call back.
WhatsAppSame number as the phone line. Written questions get faster replies.
Small office in 80333 München-Altstadt-Lehel, a few minutes on foot from Marienplatz. Ring the bell marked guthabenwerk.