Yes, the "free" account has a 3 envelope limit per the following DocuSign article...
https://support.docusign.com/en/articles/Free-account-vs-Developer-account
"This account comes with the ability to send three envelopes, but once these have been sent there is no way of sending more."
On Thu, Feb 14, 2019, 12:13 PM DocuSign Support Center
The article did not mention any limits based on number of Recipients only the number of envelopes. Is it possible you sent another and voided or deleted the envelope, which would still count against the total, it doesn't necessarily have to be successfully completed envelopes. My suggestion would be to create a DocuSign Support case and see if they can extend or add envelopes since you are still testing the application.
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