Interesting. I’m not quite sure why this is happening. The first thing I would recommend is to upgrade to the latest version of the Injector you can per this doc: Ignition Compatibility with Cirrus Link Modules - MQTT Modules for Ignition 8.x - Confluence
4.0.12 is quite old at this point. If that doesn’t help, can you open a support ticket by sending a note to support@cirrus-link.com and send the full logs from your system?