The message is generated by mwan3 application, which is responsible for handling failover and load balancing functionalities. I would assume, that you have updated your firmware from a legacy version with Keep settings option enabled, as failover is enabled by default there.
The best solution would be to reset your device to factory default settings, to mitigate effects of migration between firmwares, and reconfigure it.
Alternatively, if you are only using mobile, simply disable failover from the WebUI Network -> Failover page.
Regarding the disconnects, individual troubleshot files have to be looked at for more specifics.
Also, I see no file attached. However, please do the above and generate a new one if the issue persists. Attach it by editing your question or send it in a private message.