Hi @chrisb 
It’s a bit too technical for me too 
A few avenues to explore:
- I know it’s not the same API but perhaps @patopt Chargebee tutorial might be a good example to follow to understand how these payment flows work
- you might need to develop a custom component to ensure your secret keys are secure. In that case, it might be worth hiring someone like @dorilama to help you
- if it’s something you want to learn about, @raydeck might be able to help you work through it during one of his StateChange Office Hours
- we can also try to work it out all together in this thread! If you’d like to do that, it would be helpful to share a short video and/or screenshots showing us what you tried to do (just make sure you blur out any secret/private API key you might have in there)