Yes, I have four computers, and they have different browsers - firefox and explorer, and there is no difference there. I have even tried other peoples computers, again with no luck. Each account has a different email address on file with separate financial and credit card info info, etc, but still the problem is there.
I wonder, could the problem be that our Paypal account (the one that our payments go to) is the same for both accounts (one on eBay.com and the other on eBay.ca)??
This problem only presented itself recently, so I suspect a glitch of some sort.