My Time Zone is HST (GMT-10).
I can make time to look at this any time you reply for the next 10 hours.
I completely understand your reluctance to give out your password, especially to someone on the internet that you don't even know, but it would make it very easy for me to find and fix the problem if I could make live adjustments to my plugin code on the fly.
If you are willing to trust me you could do one of two thing that others have done for me in the same situation: create and FTP account for me that gets me into the plugins/spostarbust/ directory; or make a temporary admin account for me in your WP Admin.
If not: well, I understand. No offence taken. I will do my best to work with you to find the cause.
Please email any account info or otherwise sensitive data directly to me at :
wordpress at ieonly dot com