Tuya connection drops out

[Aza0110]

Hi, has anyone got this issue? Everything works fine tcp udp http server, client etc except for Tuya.

Monitor Page its green but only for about 10 seconds then goes red disconnected for ten seconds then back to green. 

Tuya App shows input/output state but can't control any switches. I'm guessing the router as it works fine when hotspot from my phone but all my other Tuya devices work fine on my router.

Have tried on LAN only, wifi only, dmz to board. 
Very strange as i have 10+ tuya devices that work no problem

[admin]

which KCS firmware version you have download?
do you have set the Tuya license for your board? need details.

[Aza0110]

which KCS firmware version you have download?
do you have set the Tuya license for your board? need details.

Board Model KC868_A16
Software Version v2.2.2
ProductID：ik0xxxxxxxxxxnha
DeviceID：26d5axxxxxxxxxxoph
DeviceSecret：NXxxxxxxxxxcrWF

[admin]

take a video of your problem, send to whatsapp number: +86-15381188302

[Aza0110]

Thank you KinCony for solving. Problem is firewall at ISP.

[admin]

you are welcome.

[Aza0110]

Hello sir. My ISP is clueless with their firewall. It definitely works with a different ISP but i am stuck with the bad ISP.
Is it possible it could work if i try a different server location? I am willing buy another Tuya licence if it might work. Currently in Australia on the Location-D: Central Europe Data Center

[admin]

if you want use another Tuya cloud server in different region. you need register a new tuya account by another REGION. then you can buy tuya license again.