USPS help

When I have the USPS module enabled- I am getting the following error for shipping quotes:

We are unable to find a USPS shipping quote suitable for your mailing address and the shipping methods we typically use.
If you prefer to use USPS as your shipping method, please contact us for assistance.
(Please check that your Zip Code is entered correctly.)

It used to work properly. Also- when it was working, when I would advance to the checkout section- USPS was never offered as a shippng option- even though I was able ot get a shipping quote.

Right now though, I can;t even get a shipping quote..

Please help!

have you made suire that your USPS account is in Production mode rather than test mode,
you will need to call into USPS for this to happen

Thanks for the assistance.

I checked and was on the test server. I think that will resolve this.

Many thanks,
Mike