"device is pending first connection from the cloud"

Please update your device to the current firmware version, after that check if you have an 12 character long id or not. You will see it in webUI on Settings > Device Info.

If the id is only 6 charakters long open in your browser http://<shellyIP>/longifyid

Your shelly will be reseted and you have to new integrate it to your network but after that cloud should connect

Same issue here. Has of course nothing to do with long IDs.