Hi Mr. Jeffrey
Thanks for contacting us. Don’t worry we are here to help you.
Please follow the help article to install and activate the pro version of the theme https://helpdoc.themearile.com/?docs=designexo-pro/getting-started.
This article will completely help you to use and activate the pro version of the theme. Because we are here to any kind of help for the theme.
Let us know if it works.
Have a great day.
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Thanks