Get in touch with HTK

We're here for courses, labs, billing questions, and partnership enquiries.

Mon–Fri · 10:00–18:00 CET · Response within 48 business hours

Support

Common answers about labs, refunds, certificates, and course access.

Community

Ask questions, share write-ups, and get guidance from instructors on Discord.

Billing

Invoices and purchase history.

Invoices and purchase history.

Direct support

We aim to respond within 48 business hours. For account or access issues, include your Order ID and the course or path name.

  • Hours:Mon–Fri, 10:00–18:00 CET
  • Billing & access:Direct triage, include Order ID
  • Discord:Real-time support for bundle students
  • Partnerships:Use the form and mention it in your message

Typical response time: <24 h

Most support tickets are resolved same business day during working hours.

Send us a message

Account / access issue? Include your Order ID and course name.

Contact Frequently Asked Questions

Fast answers for support, billing, and partnership questions.