How do i renew a purchase more single credits vs. a subscription?
I want to purchase single use credits instead, like before but I don't see it on the website?

Hello Gavin,
Thank you for your question about upgrading! There is a link at the top, "Upgrade." There is also the "Subscription/Points" link at the bottom left.
I realize these may not have been present (or obvious) at the time you wrote, but they are now more prominent.
I hope this has been resolved to your satisfaction. Thank you for taking the time to write in.