GW Showing [almost] double amount of data usage with VPN

I saw this in a duplicate thread:

And I see you here much more recent saying something in similar regards and I was wondering if you were any closer to solving this problem? I run almost exclusively on a VPN +/- a few MBs here and there and my traffic seems almost duplicate most of the time. The problem is, often times, well not that often, but around 3-4 times a month, my VPN doesn’t reconnect after a disconnect and my system runs on my IP. I’m not worried about that since I have a rather extensive IP filtering firewall (which I strongly suspect is responsible for some of the reconnect issues), but it’s times like that where tens to a 1-2 hundred GB are not accounted for by my VPN, so it’s rather tedious to find exact data usage.

I’m really interested in purchasing your software because it seems among the best, since neither DD-WRT nor OpenWRT router firmware monitor is available for my D-Link DIR 655 router. Thus I would really like to know if you are any closer to solving this VPN doubled data usage issue?