Hello @joopon
Please try the following steps and see if the issue is resolve.
1) Go to Booster settings
2) Go to “Emails and Misc”
3) Click on “Emails and Misc” –> “General” setting
4) Change “Session Type in Booster” to “WC Sessions” (it should have been set to “Standard PHP sessions”).
Thanks,
Booster.io – Support Team
