Impossible to import new subscriptions

Hi! I'm trying to import 300 new subscribers but it doesn't work. All records are empty.
I used the sample file you provide but it still doesn't work.
I use the latest version of Joomla and the latest also for your component.
I can provide an access to the backend but I need to know where to send the information.
Please note that everything is supposed to be in production tomorrow at the end of the day.

Hi Helene

You can access to joomdonation.com/support-tickets.html , submit a support ticket, sending us super admin account of your site and the csv file. We will check to see what's wrong with the csv file and get it sorted for you

Regards,

Tuan