Failing websocket connections SendBird JS SDK

It seems that one of our customers is having issues upon connecting to SendBird via SendBird JS SDK.
From NewRelic reports I can see that there are multiple SendBirdExceptions with code 800210 and Websocket connection failed message. It seems that no other customers are impacted, to main guess for now is their antivirus/proxy/etc setup.
SDK version: v3.0.77

Logging a ticket for tracking, please feel free to refer to any other place if you think if suits better

Hey, thank you for your question. I suspect you are right that this is network related and I think a good first step is to make sure that connections on port 443 are allowed.