Online ticket sales for this event are closed

Hello Joe,
thanks for your great plugins!
I’m testing My Calendar + My Tickets to improve city tours. After a few days tickets go not available for sell (emails are sent to warn) and in the event pop-up this message appear: Online ticket sales for this event are closed.

I followed suggestions you gave in as similar issue in 2021 (‘Online registration for event is closed’).
1) Yes, there are tickets available for the event
2) Reserved tickets (in Settings) is not specified
3) Both printable tickets and e-tickets are offered. No mail tickets and delivery time is left 3/5 days
4) This issue occurs on recurring events scheduled by setting the period on event settings. I tried to change event time to re-schedule entire event calendar, but i’m not lucky.

Any suggestion?

Thank you
Fabio