Problems with fake cloud script.

[NihilUnum]

Hi
I am not sure that this is a bug.
I am using a Midea AC Mobile 35C with Home Assistant 2024.4.2 and the HACS integration midea_ac_lan.
I didn't know that cloud access is still needed, but there's your fake cloud script.
As per the instructions, I have set up the redirection on my OpenWRT router and tested it with nslookup, resulting in:

Server:  openwrt
Address:  192.168.11.254

Name:    module.appsmb.com
Address:  192.168.11.2

I downloaded the Python script and set it up as a service, on my Home assistant server with Debian 12 resulting in:

$ sudo systemctl status fake-cloud
● fake-cloud.service - Fake Cloud Server for Midea AC
     Loaded: loaded (/etc/systemd/system/fake-cloud.service; enabled; preset: enabled)
     Active: active (running) since Sun 2024-06-09 15:07:06 CEST; 1 day 4h ago
   Main PID: 470 (python3)
      Tasks: 1 (limit: 8186)
     Memory: 9.8M
        CPU: 67ms
     CGroup: /system.slice/fake-cloud.service
             └─470 /usr/bin/python3 /usr/local/sbin/fake-cloud-wmp.py

I can see that my AC is connecting to the fake cloud server:

sudo netstat -anp | grep :443
tcp 0 0 192.168.11.2:443 0.0.0.0:* LISTEN 9826/python3
tcp 13 0 192.168.11.2:443 192.168.11.229:40003 VERBUNDEN 9826/python3

But a couple of minutes later, it becomes unavailable. Am I doing something wrong?
Or is my Midea not supported?

best
NihilUnum