[Plugin: poMMo for WordPress] Unable to Import

I have been using poMMo for a long time on my old website, and I’m trying to import my subscribers into my new database. However, whenever I try, the count stays at 0. I’ve tried in Firefox, Safari, and IE8. I exported my list as a CSV from poMMo and imported it into the wordpress plugin. It recognizes all of the e-mails and everything parses correctly, however the count goes nowhere.

If I go in and manage the subscribers, it stops after the first 100. If I try to upload again (either removing the first 100 from the file, or telling it to skip the first 100), then it adds 100 blank e-mails.

What am I missing?

Thanks for any help you can provide.

https://www.ads-software.com/extend/plugins/pommo/