@aronkor@HelloSign Are you entering an https url? To test locally you can use a tool like ngrok. Here's some additional info and if you scroll to the end there's a link with an example to use ngrok https://t.co/arcLHxvzKo let me know if that helps.
@aronkor@HelloSign Aron, you can certainly do this with a free account. Please visit https://t.co/lCpEFfkcBX, create a free account and get an API Key under settings, then use the test_mode flag in all the API calls, which give you unlimited access to the API for testing purposes
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