Wondering if using a different computer means I won't get credit.

I made a purchase from Old Time Candy on 7-1 for thirty-something dollars and I made a $80+ purchase from Children's Place on 7-8-07. No credit is showing pending from these. I linked through SR on my home computer to make the purchases.

I purchased from magazines.com on 7-6 from my work computer and it is already showing pending.

Could the different computer make the difference???