registrants export issue

Hello,
i become after export of the registrants a issue notice of Excel (my version Excel 2019). Here the notice:"
the file registrants_XXX cannot be opened, because the file format is not valid or the file extensionis not valid. Please check whether the file is damaged and whether the file extension is the file format."
How can fix this?

sincerely

Torte

Hello

Could you please enable this plugin eventbookingdoc.joomservices.com/plugins/spout

It should handle export better

Regards,

Tuan