Batch Create Not Working Properly

After it batch processed about 1,000 users. It started to only creating 1 user at a time each time I push the process link.

I have recreated the .xls file multiple times and re-uploaded it, and still it will only create 1 account at a time.

I know the list is composed of unique names and emailaddress, so this is not the cause.

I still have over 2200 users to go. Not something I’ll be wanting to sit here and push.

Any cause for this?