When I struggle with an API in Bubble I try to simulate the problem in Postman. In this case, I am able to connect to the outside API, authenticate, but when Bubble tries to fetch a token there is a “MISSING_INFO” error. I had the same thing in Postman until I changed my OAuth settings from “Send as Basic Auth Header” to “Send client credentials in body.” The latter worked and I was able to trade an auth code for an access token.
But I don’t see exactly how I replicate that change in the Bubble API connector. I assume sending in the header is default behavior, but I have no idea how to go about changing that to replicate my success in Postman.