Yes, the SamKnows White Box is still in use and supported, is useful for longer term line monitoring should other provisions fail (DSLStats or MDWS when it was active) also gives an additional 4 port LAN switch for free although only 100 Mb ports in my case, a TP-Link device.
Still get monthly line reports from SK.
Don't use the site for anything else so can't comment on current accuracy or otherwise.