Disappearing Data Transfer / Usage History

We have installed a Peplink 305 for a client and are mostly happy with it, but for some reason the data transfer history keeps disappearing (or getting reset?). All other settings are still there, just the usage history is gone. I am hesitant to recommend this to other clients because we were hoping to use the feature where a link would stop being used once it hit a certain level of usage, and the clients also need to track usage for other reasons as well.

Anybody have any insight?

Thanks!

The bandwidth usage data should not be disappearing, in fact my Balance has monthly data usage dating back over 3 years. This information is retained even through a reboot. Please open a support ticket so we can have a look:
http://cs.peplink.com/contact/support/