Hi John
No, you don’t need to upload the “arilewp-pro-child-theme” package. You will need this when you customize something in the parent theme. That is why you can only upload a parent “arilewp-pro” theme now.
Actually, we provide this “arilewp-pro-child-theme” package in advance.
So use the “arilewp-pro” theme package and build your good website.
I hope your confusion has cleared up.
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Thanks