em client will not import csv file

I was using Roundcube webmail with my previous hosting provider. I exported my contacts from Rouncube as a VCF and, on Roundcube webmail with my new hosting (Siteground), was able to import them. However, when I go to file>import>import from vcf and check the boxes, there are no VCF files shown anywhere (downloads, on my ext hardrive where I have also saved the file).

The import dialogue is a bit odd. Just go through it and point to the correct folder (even though the files will not be visible), select the destination and click finish.

Thank you!