When you enable stripe it is not enabled under Modules > Payments > Payment Module Restrictions

[gingerling]

When I first enabled the stripe module it did not show up in my store, eventually I found a suggestion in an old forum from 2013 to try Modules > Payments > Payment Module Restrictions - a page I had never seen before. It was not enabled for any of my shipping options.

Either this needs to be fixed or a line should be added to the quick start help section

Quick start

Visit https://stripe.com/ and find your API keys.
Enter your keys on this page
Optionally configure the webhooks and repeat this process for every store if you have multistore enabled
You are good to go! Should you find any problems, please check out the wiki
If you have found a bug or the wiki didn't solve your problem, please open an issue on GitHub: https://github.com/thirtybees/stripe/issues

Suggest adding after optionally configure

Make sure stripe is checked for your shipping options here (link)