Venu Sq 2 not calculating VO2 Max since v2.59

Since updating to system version 2.59 my Venu Sq 2 is no longer computing VO2 max scores when I do a running activity. VO2 max was updated for every running activity for six months before this update. I have done a factory reset and used a heart rate strap to try to get a VO2 max score to no avail. Is this a bug or is there something else I can try?