To switch to Production mode please:
1. turn off test mode in your signature requests
a. you can either disable test mode, or remove the parameter altogether
a. skipDomainVerification can be found under the Hellosign.open() method
And that's it! Once you turn off test mode, the signature requests themselves will be in Production. Turning off the skipDomainVerification on the client-side will remove the pop-up warning when you're using the iframe.