"HipBucket is the Doodle for online payments" was the first thing my eyes were drawn to, yet this sentence is difficult to process--maybe you could reword this? It looks like a cool idea though!
It's important to pay respect to Doodle; however, you need to capitalise on that first sentence. I think something more to the order of, "HipBucket lets you collect payments through a single link, safely and easily."
edit: And obviously pay due respect to Doodle in a later sentence. And I love GoCardless.