Your trial license key is:
ZE13AC69F0F8F1DBE38C1FYBB7D1CEE2EYFZA77BB8A8ACDZ9F989E38EDBB
Put the following code snippet at the beginning of your applications:
ComponentPro.Licensing.Excel.LicenseManager.SetLicenseKey("ZE13AC69F0F8F1DBE38C1FYBB7D1CEE2EYFZA77BB8A8ACDZ9F989E38EDBB")
If you see the copyright message after the trial key is set: