Activating premium version is so easy. Just download the zip file from your account via our site and upload it and activate as you do for other themes and yes you will have the same data and settings. Free version is fully compatible to Premium version and you will not lost any thing. Just make sure that you have not modified theme main code before updating.
Actually those are widgets and you can customize it via Appearance > Customize > Widgets there you will see Front Page Content Section and Front Page Sidebar Section to set the categorized posts as per your need. You can view the video tutorial here as well.
May you have used some plugins or something for mobile version. Deactivate/Disable mobile version feature as this theme is responsive to any devices. So you not need to have the mobile version of your site.
Can you please check deactivating all plugin one by one. It may be plugin conflict too. Also please check/uncheck the checkbox and save it twice.
We apologies for the late reply. We are busy fixing some issue into the site. You can post the topic here in this forum which will be replied within 24 hours. Please consider slower response times due to time difference and in weekend as well.
