XProtect Corporate: error in Connect xml command to Image Server

I’m running Xprotect Corporate on Windows 2016 Server. I’ve secured a fresh new token from the management server, established a connection with tcp server on port 7563 and submitted a connect xml command, followed by 13-10-13-10:

<?xml version="1.0" encoding="UTF-8"?>1connectdummydummy853209bd-c694-459e-bccf-9779b0de2b92id=853209bd-c694-459e-bccf-9779b0de2b92&connectiontoken=TOKEN#397cfc47-59d8-4f0e-8cb6-60c610d99a4d#maya.imagesleuth.lan//ServerConnector#

And got the following responses:

<?xml version="1.0" encoding="UTF-8"?>1connectyesSuccessnononono0nonoyesyes

And also:

HTTP/1.1 400 Bad request

Content-Type: text/xml

Content-Length: 35

Connection: Keep-Alive

HTTP/1.1 400 Bad request

Are you by chance somehow sending two requests?