I am working in the sandbox right now. On my computer, the OAuth process goes perfectly fine while using my localhost:8080. However, when I push it to my website, it isn't working.
After "the client" logs into their account and then chooses a merchant, it simply redirects back to the home page with no data from Subline about the OAuth process. I have no idea what is going on here. I have confirmed that both the code on the site and on my local machine are identical. Everything that is different is in an environment variable, and I have double/triple checked them.
Any help is greatly appreciated.