I am trying to place an order but when I try logging in the browser sits for a few minutes then goes back to the main page. I have tried in both Internet Explorer 11 and Chrome. I have also re-boot my PC. Is there something wrong with the server?
What it this limit? I have like 90 items in my order and I can't place an order for more than 30 hours. And I tried at least a hundred times but get the same result as you...being redirected to the main page every time...
Taking a wild stab in the dark, but from recent posts I think it's likely the total weight is going over the biggest deliverable package to your location in Paizo's shipping table.
You may have more luck removing the largest, heaviest items first and ordering them to be shipped separately.