Credit Card Checking Bots

Not sure if this is a woo issue. Was clear for a while but once again, my site is being hammered with credit card check bots. WPArmor kept them at bay for a while but no longer. Also have Cloudflare, but do I need the payed version for it to actually do anything?

What other options do I have?

Thank you in advance

The page I need help with: [log in to see the link]