It looks like United is automatically extending United Club Lounge certificates that are expiring until August. For example:
- Certificates that expired in March have been extended until July 31st, 2020
- Certificates that are due to expire in May have been extended until August 31st, 2020
- Certificates that are due to expire in August have not been extended
As far as I know United hasn’t stated this as official policy as of yet but worth checking to see if yours have been extended.
Hat tip to Viper3773