USPS OPENCART 1.5

I register and have my web tool information from USPS. On the shipping page it only ask for my UserID and zipcode no password.

so what?
Do you usually fill out forms for people and then tell them they didn't ask you certain questions

If it doesn't ask, then it doesn't need it!

usps is ask me to test

Your Web Tools User ID, shown above, is required to test and integrate USPS Web Tools APIs. With this ID, you may begin sending calls to the test server. Depending on the API, the address to the test server is either http://testing.shippingapis.com/ShippingAPITest.dll or https://secure.shippingapis.com/ShippingAPITest.dll. Use this information in combination with your User ID and your XML string to send a request to the USPS servers. For more details, refer to the programming guides (located at http://www.usps.com/webtools) for the specific API you are integrating.

A sample test request would look like: "http://testing.shippingapis.com/Shippin ... ng_User_ID]"

When you have completed your testing, email the USPS Internet Customer Care Center (ICCC). They will switch your profile to allow you access to the production server and will provide you with the production URLs.

i don't understand. I sent an email to them for help. Thanks,

Just tell them you are using OpenCart and it has already been authorized and they should switch you right to production.