This website is impossible to use
I've wasted an hour, provided my credit information twice, signed in through Amazon and allowed charges through them, and I still cannot gain access to the once simple program I seek.
I realize this is disappointing though, Twinword do not accept credit card directly. You can subscribe and consume Twinword API via AWS Marketplace. I hope the following link might help you. https://www.twinword.com/blog/subscribe-consume-twinword-text-analysis-apis/