Fail to export all content

Hi, I’m trying to export 52 pages. After I run the export, the plug-in says 52 have been exported, however, the .csv file only has 5 rows.

It’s weird because in the page where you add the fields, when pressing preview I can see the first 10 pages, so how come I can see them but not export them?

Also the same is happening with posts: I have to export 88 posts and I only get about 40 exported but in the Manage Exports page it says that 88 have been exported…

Any idea about how to solve this?
Thanks!!