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Description
I'm trying to add a recipient(s) to a list using the PHP SDK but it doesn't seem to work. I get hit with the unauthorized access error (403). Funny thing is I'm even on a paid plan, changed API keys but all to no avail. Sending emails works fine but I can't get a subscription to work.
I contacted support with my issue and I was told they don't do that kind of diagnosis and will have to leave a message here on git. smh...