@Davide Fantin - Nope - you’re not missing anything… I am seeing inconsistent results when loading loading the org chart widget from different browsers/team spaces, but all with the same Miro user profile:

If you have a paid subscription, I would suggest that you open a Miro support ticket by following these instructions:

https://help.miro.com/hc/en-us/articles/360020185799-How-to-contact-Miro-Support#h_01F010RXA0E1S9C0WFQYX75R6C

If you do open a ticket, it would be helpful if you could leave a reply in this thread with the outcome 

Thanks. Very inconsistent indeed. Now the import CSV appeared, I am logged in with same user profile and same browser (Firefox)

Thanks for the update, @Davide Fantin ! Sorry to hear about the frustrations you had this week!