Using Memberstack 2.0? We've built hundreds of Webflow components that work with Memberstack 2.0. They make the setup process 100x easier and support all kinds of new features like hCaptcha and Social logins.
"When trying to log in with an account I created, I’m shown the error message 'missing credentials'."
If you're getting this error it usually means one of your data attributes is out of place.
I recommend circling back to this article on Webflow Signup & Login Forms and confirming that you followed the steps exactly. You can also open up the developer tools on your browser to search for errant attributes. Ensure they are only placed on your <form> and <input> elements.