Hi,
seen this post I would suggest you to change the connection string from wss://blynk-cloud.com:9443/websockets to wss://blynk-cloud.com/websockets
I would not like there were problems with the incorrect port.
I currently have no connection problems on my nodered on raspberry, but it’s also true that I stayed at version 0.19 of nodered.
I only did some tests with the 0.20 version and it didn’t seem like there were any connection problems.
The problem of disconnection can happen when the internet connection is missing for a few moments …
But as soon as the connection returns on nodered it reconnects to the blynk server or not?
let me know that I will try to investigate the problem.
it would also be advisable to have a longer log to understand before or after the disconnection what happens, for security, enable the ping in the logs that is useful.
Thank you