Contact the site operator
Operator: Роман. Email: r7438239@gmail.com.
What to include
Describe the action, model version, browser and the smallest set of non-sensitive inputs that reproduces the problem. State the value you expected and the calculation behind it. A redacted JSON project can help, but do not send customer identities, confidential designs, credentials or payment information.
What not to send
This site does not need STL files, G-code, passwords or API keys. It has no contact form backend, upload support desk or automated submission process. An email link opens your own mail application; submitting a report is your choice.