If your account expires, it means you will only have two hours of upload space going forward, and you won't earn royalties for any pieces sold while you have a lapsed membership.
If you would like to renew your membership, follow the link in the homepage notification or go to My PRX and "Extend your membership!" You can pay for your year-long membership with a credit card.
If you're a station member ready to renew or you have questions, email membership@prx.org, and we will respond to you right away.