I made a domain transfer to Cloudflare registrar. However, no payment was deducted from my account. Now that I had effected the transfer, the domain remain unusable(it just expired). I can’t find a place to make the payment, and it was not under my Billings page.
Checking your account, the one registrar domain I can see in your account is active and unexpired and has been billed for.
If you’re talking about another domain it’s best to visit https://dash.cloudflare.com/?to=:account/support and follow the Contact option and you can file a Registrar issue direct with our team there to help you.