1. Could you create the login and password for your nopcommerce store for me?
Feed manager has it's ACL and I'll see only Feed Manager.
Send it to the email support@foxnetsoft.com.
2. Open the plugin configure page and enable debugging.
Clear the plugin log file.
Wait one day and send it to me.
3. Did you configure the schedule for each day?
4. If you use the localhost, did you use SSL for localhost?
Open the plugin configure page and disable https. It should help.