EWBF api - this is the first option that I tried, but it doesn't work also.

 "ewbf" {
                $Message = @{id = 1; method = "getstat"} | ConvertTo-Json -Compress
                $Request = Invoke-TCPRequest $Server $port $message 5
                if ($Request) {
                    $Data = $Request | ConvertFrom-Json
                    $HashRate = [double](($Data.result.speed_sps) | Measure-Object -Sum).Sum
                }
            }

Do you have any idea what could be wrong here?

Also please write me a private message.