It's not no need, it's they don't accept counter payment anymore. Have to do online.

You better register an account with the STAMPS website quick, because they will take a few days to approve your account. Then you need to figure out how to use the website. Then they will take weeks to review your submission. If got any problem, you need to figure out what is the problem based on the note left by their staff. Then after you resubmit, you need to wait a few more days for them to review. Good luck.