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For a question about the subscription, write from the company portal or from the contact form. The message becomes a ticket and receives a number.
For your customers' service desk, use desk.cyberit.md. You can place the form on your own site, or let another application open tickets with an access key.
If an integration does not answer, open it and read the last message from the test. Most often an application password is missing, or the address is not public.