As Retired suggested, I followed the "Factory Reset" instructions enumerated at
https://www.totaline.com/dl/STAT_SETUP_CHEAT_SHEET.pdf
Factory Reset:
Move Program switch to Set
Hold Next to enter setup
Press Next to go to step 2 (€œCy€)
Press and hold Next until all icons appear
Press and hold Next until €œFd€ appears.
Press Next three times
Move the Program switch