@Esteban - I am going to assume that by “cangbang” you mean “Kanban”?

I too am noticing that selecting a Kanban object (or by using left-click-and-drag to select the Kanban board and all Cards that belong to the Kanban) results in the same behaviour - no download of a CSV starts:

I will report this to Miro support.

As a workaround, you can

1. Select all objects,
2. filter on the Cards
3. and then export:

Thanks for the help @Robert Johnson 

Yes is a “kanban” sorry.

Me use this workaround:

1. Select all objects,
2. filter on the Cards
3. and then export:

And finaly me can export to excel.

Update #1 from Miro support:

I'm afraid that currently, there's a bug on our end that causes this behaviour. The good news is that the team is already aware of the issue and is currently working on a fix for it. We're bringing our sincere apologies for all the inconvenience it causes! 

We'll definitely keep you updated on the progress. Please, bear with us! 

RESOLVED - Update #2 from Miro support:

Amy from the Support team stepping in for a moment!

Our team has just released a fix for the Kanban CSV export bug. 

You will need to sign out and sign in again for the changes. Please let us know if you still have any issues!

I have retested and the export is working again.