I'm having the same issue & was wondering if it may be something to do with antivirus? I used Bullguard AV which has recently changed to Norton AV & the issue seemed to coincide with this change.
Re-activating the token doesn't seem to help, but reinstalling aslains modpack & then resetting the xvm token fixes it until I log out of the game & back in again. Then no stats until I reinstall modpack again. Something to note is that I need to deactivate the data protector in the AV before I can install the modpack. Could this be the issue as the data protector will be active again by the time I log back into the game?
Seems to be working correctly now thank you both. Have logged out & back in a couple of times & still have stats. Thanks again :)