Well, thank you for your answer but it still doesn’t work, although I’ve made all the tests possible (deactivate all other plugins doesn’t solve the issue, nor re-installing the Events Calendar and Event Tickets).
I’ve already spent too much time on this issue and I’ve reached a point where I don’t know what to tell my client about its resolution, so I would appreciate if you could refund me for this purchase in order to use another plugin, which will hopefully work better.
Best,
Deborah