No answer from server

OK, I tried really hard, gone through quite a few existing forum threads with similar issues.

It seems that the server just doesn't want to send me any data back. I get no error but also no response...

I've written my code in Python looking at the example code of C#. Here is what I have:

import socket
import datetime

### 1 Custom variables: ###
heartbeat_interval = 30
user = r'1234567'
password = r'password'
SenderCompID = r'icmarkets.1234567'
TargetCompID = r'CSERVER'
MsgSeqNum = 1
utct = datetime.datetime.utcnow()
SendingTime = utct.strftime("%Y%m%d-%H:%M:%S")


### 2 Constructing Body ###
body = {
'encryption_scheme': r'98=0',
'heartbeat_interval': r'108=%s' %heartbeat_interval,
# 'sequence_reset': r"141=Y",
'username': r"553=%s" %user,
'password': r"554=%s" %password
}
bodyStr = ''
for e in body:
    bodyStr += body[e]+'|'


### 3 Constructing Header ###
header = {
'8-BeginString': r"8=FIX.4.4",
'9-BodyLength':  r"9={message_length}",
'35-MsgType':  r"35=A",
'34-MsgSeqNum':  r"34=%s" %MsgSeqNum,
'49-SenderCompID':  r"49=%s" %SenderCompID,
'57-TargetSubID': r"57=TRADE",
'50-SenderSubID': r"50=TRADE",
'52-SendingTime': r"52=%s" %SendingTime,
'56-TargetCompID': r"56=%s" % TargetCompID,
}
#
headerStr = ''
for e in header:
    headerStr += header[e] +'|'

message = headerStr + bodyStr
message_length = len(message.replace('8=FIX.4.4|', ''))
message = message.replace('{message_length}', str(message_length))


### 4 Calculating checksum ###
arr = bytes(message.replace('|', r'\x01'), 'ascii')

s = 0
for byte in arr:
    s += byte
cs = s % 256

if len(str(cs)) == 2:
    cs = '0%s' % cs

print("Checksum = %s" % cs)

message = message + '10=%s|' %cs
# '\x01' or '\u0001'?
message = message.replace('|', r'\x01')
print(message)


### 5 Sending message ###
message = message.encode('ascii')
print(message)

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
#  37.48.78.15 or h59.p.ctrader.com
s.connect(("37.48.78.15", 5202))

s.sendall(message)
print(s)
data = s.recv(4096)

print("received message:", data)

I get no errors but I also don't get any response from server. The higher likelyhood of where I stumbled:

1. In Python, what should be the '|' replaced with, '\x01' or '\u0001'?

2. What TAG #50 should be in this case? Should it be the same as '57 TargetSubID'? In documentation it's '50=any_string'. But on the same page slightly further down in the table it's 'QUOTE - Assigned value used to identify specific message originator.'

3. If I'm not using SSL, then I have to connect to 37.48.78.15:5201 for QUOTE and to 37.48.78.15:5202 for TRADE?

4. If SSL then to 37.48.78.15:5211 for QUOTE and to 37.48.78.15:5212 for TRADE respectively?

5. When I do 'message = message.encode('ascii')' my message start looking like this with double '\\', is it OK?:

b'8=FIX.4.4\\x019=135\\x0135=A\\x0134=1\\x0149=icmarkets.1234567\\x0157=TRADE\\x0150=TRADE\\x0152=20201116-18:01:58\\x0156=CSERVER\\x0198=0\\x01108=30\\x01553=1234567\\x01554=password\\x0110=072\\x01'

Any help and suggestions would be very much appreciated!

Thank you!