I just went through this today. My subscription had lapsed and I didn't receive any notice or warning but to be honest I haven't been on lately either. In the past there may have been an auto renew feature but my understanding is for now we must subscribe manually.
Have subscribed again, and really very quick and easy with PayPal payment. IIRC, If you prefer to pay with some other method, you should send email to an Admin for instructions. Either way, a bargain to support the best Audio website on the internet. Cheers!