Do you have questions about using 4-check?


The 4-check team is available 24/7 via email and phone. Contact us and we will help you immediately.


You can reach us at any time by telephone at the following number: +49 251-981156-2258


Write us an email quickly and easily.


Of course we are also personally at your disposal. Contact us for an appointment.

Online help center

Our online help center contains different explanations and tutorials to help you to discover different functionalities.