I had similar problem. The Thinger Server disabled my device after repeated connections and disconnections, due to the “Bucket - From Device Resource: Sampling Interval” writing feature (see this post). Thinger Server performed multiple writes to Bucket due to WebSocket connection and disconnection. I understand it as a critical point that needs to be improved on the Thinger Server.
But I couldn’t identify the reason for the various connections and disconnections. On the website of the company that provides Internet access via GSM, the indicator indicated that the modem had been connected for several minutes and was stable.
I would like developers to more quickly and transparently discuss these issues with the community.