Import not working

Hi,

I loved this plugin, used many time. Now I’m using this plugin on a multisite. Export works ok. But when I try to import, it says: You did not select any file. I’m going maaad! Have a lots of sites and users, manual copy for each network would take a week!

Have tried disabling all plugins but this, no change…

The file IS selected.. https://prntscr.com/ess3uq

Thanks a lot!!