KC868-A8 TCP -Server

[Dm81]

Hello
I configured a KC868-A8 as a TCP Server and I am having the following problem
if I send the command to turn ON and OFF a relay for 8 or 9 times (some times only 3 or 4 times) it works but after that the server does not respond anymore
firmware is v2.2.13
power supply is original
I also tried to check the communication with wireshark and when the communication stops wireshark shows as in the attached figure
kc868-A8 ip is 192.168.1.64 
suggestions?
thank you in advance
   

[admin]

what string command you have sent?

[Dm81]

what string command you have sent?

I send RELAY-SET-255,8,0 - RELAY-SET-255,8,1
I have no problem with other device like KC868-H32 or H16, they work every time 
thank you

[admin]

do you have disable others protocol, only enabled "TCP Server" protocol?

[Dm81]

do you have disable others protocol, only enabled "TCP Server" protocol?

yes, correct    

[admin]

"if I send the command to turn ON and OFF a relay for 8 or 9 times (some times only 3 or 4 times) it works but after that the server does not respond anymore"
What is the time interval between each command? at least need 500ms. Are you sending commands quickly and continuously?

[Dm81]

"if I send the command to turn ON and OFF a relay for 8 or 9 times (some times only 3 or 4 times) it works but after that the server does not respond anymore"
What is the time interval between each command? at least need 500ms. Are you sending commands quickly and continuously?

KC868-A8 controls a light, sometimes it works 2 or 3 time, after that the servers stops to reply to the commands and my client doesn't know which is the status of relay
I restart the client and it works for 2 or 3 times again
I use same program with others kincony device from 2 years and I don't have problem, they works very well
I saw another thing, If I disable wifi and I save changes It stay on after restart (I don't use wifi connection but it's just to inform you)

[admin]

do you means: you have some KC868-A8 board, same program code, one A8 board have this issue, others work well?

[Dm81]

do you means: you have some KC868-A8 board, same program code, one A8 board have this issue, others work well?

Yes, I have maybe 8 kincony device (all configured in server mode) that manage my home from 2 or 3 years
I add A8 as last device but I have this problem
I make a small programm that turn on and off relay 7 every 1 sec
In the back you can see the web page of the device, 2 thinks:
1 I revecive the sent message in maybe all reply (just first reply not include the sent message)
2 Client is disconnected after problem

For connection I use synapse library
thank you

[admin]

can you change to 2s for testing, more delay time.