Authorization error in Phonet integration

Good day. I encountered a problem when setting up the integration of the box and Phonet telephony. The problem is as follows, when the integration is connected to the phone, authorization does not take place. The sequence of actions was as follows: We added the domain, login and API in phonet integration on the phonet side, at that time, in the box, the api had not been added yet, I assumed that the api would open on the phonet side after filling in the data, but when an error appeared, I wrote to support phonet, support said to take the key from "integration with other crm" to insert the domain and api into the box application, did it, but still box authorization does not go through. I am attaching the answer of phonet support and other screenshots [file]17302[/file] [file]17303[/file] [file]17304[/file]