I'm sure you've solved this by now, but the HS100 plugin is deprecated and it is recommended to use the updated tplink-smarthome plugin found here:...

Providing a real quick update on this. My advice now is to reach out to support and explain the issue. I used the ticketing/email system ( http://www.tp-link.com/us/support/contact-technical-support)...

Thanks for the tip on resuming date/time. However, I noticed that my LB120 keeps reverting back to the wrong date (+1 day.. time is correct). A resync helps temporarily but I'm unable to determine...