'httr authentication login/password in "xtb" API

I need to authenticate and get prices using this api

I have no experience with api so my attempt to login gives an error

login <- "[email protected]"
pass <- "QazQaz123"

library(httr)
resp <- POST("xapi.xtb.com", 
             body=list(userId = login,
                       password = pass) )

Error in curl::curl_fetch_memory(url, handle = handle) : 
  Failed to connect to xapi.xtb.com port 80: Timed out

Can someone show me how to do it right. I would like an example of how the login request works. And also I would like an example of how to get the prices of any currency



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