FWIW, I personally don't care about this issue as I never bother going to the web site to check my stats any more. If trips or distance is missing, too bad.
A bunch of us who paid to upgrade our TCU to support 3G since AT&T turned off their 2G network (rendering all 2011 to 2015 Leafs w/their stock 2G TCUs useless) already have enough issues w/the TCU getting into a bad state/hanging (requiring a fuse pull as a workaround) or having a yellow ! car light w/the yellow ! triangle sometimes. The latter seems to be related to having any saved charging locations and turning on auto-saving on this + having plug-in reminder enabled.
And, some folks are having 12 volt battery drain problems that seem to be caused by the 3G TCU. viewtopic.php?p=497352#p497352
mentions engineer flew in from Singapore to observe and diagnose.
So, I'm just thankful that I receive notifications, can check charging status, send a remote charge command and use the remote climate control features, usually. When it quits working, I pull the fuse.