Calendar & Events

I’m having some problems while using the calendar in ver 9.2.
Every event i create appears in dashboard, but somehow i’m having troubles using the Calendar and event list blocks.
The calendar was set in an Agenda page and doesn’t show anything. It was showing if I set it has month list but then i deleted the block and created a new one and nothing shows anymore. (cleaned the cache even)

Is there a known issue with this?

thank you

This is going to sound simple but have you definitely selected the calendar to view from

Yes, I’ve selected it. Tried with and without filtering by attribute.

(edited) somehow today morning it was wokrking again. I really don’t get some of this errors.