You’ll need to contact the developer directly for help with the Pro version – these forums are only for free version support. Looks like you can do so here:
https://themeisle.com/forums/
Hi,
You need to download the Pro add-on from your Purchase History at this link: https://themeisle.com/purchase-history/
After that you can install it from Plugins > Add New > Upload section of your WordPress. Keep this in mind, you need to have Revive Old Post installed in order for the Pro add-on to work.
And as WPYogi pointed out, this is not the place place for the Pro support. I will be happy to reply here too, but it won’t be much helpful for other ww.wp.xz.cn users. 🙂
Regards,
Hardeep