Hertz points normally expire if you don’t have a rental every 18 months.
If your points expired or were set to expire between 3/13/20-6/30/20, you can check for an email with the subject “Changes to the 2020 Gold Plus Rewards loyalty program” for an opt-in link to extend your points validity until 12/31/20. You must opt in by 6/1/20.
If you didn’t get an email you can also try going to this URL and replace the X at the end of the URL with your Hertz membership number: https://pub.emails.hertz.com/2021-point-extension?gn=xxxxxxxx
Loyalty status is also being extended until 1/31/22, without the need to opt-in.
Hertz is currently working to avoid bankruptcy. They have a history of devaluing points without notice, so hopefully they don’t resort to that again.