This post was split from the topic: Apollo error: We hit an error adding your new account Authentication failed: The app returned "Not Found".
having the same issue though mine also says “api/v1/zapier_rest_hooks/plugin_api_key_auth is not accessible with this api_key”. Have tried many different ways - is this still an unfixed bug 4 months later?
Hi 
Hope you don’t mind but I’ve split your post out into it’s own topic. As it seems like you could be running into a slightly different issue if you’re seeing a message that says “api/v1/zapier_rest_hooks/plugin_api_key_auth is not accessible with this api_key”.
I found an internal note that referenced that same error which mentioned creating a new API Key and applying it as the “Master Key” resolved the error for some folks.
Are you able to give that a try and let us know if that solves it for you as well?
Hey there
Eager to ensure you’re all sorted here so please do let us know whether you need any help still! 
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