Upgrade Winner theme by oitentaecinco

Hi. I have a website running Winner Theme (done for me about three years ago), I have had some issues recently and think that the Version 2.2 and bundled plugins, is too old.
I am happy to pay for the latest version to get the problems sorted, but I am not sure if I upload it and activate it whether it will run as an upgrade or will I loose anything. I didn’t code it so not sure if there is anything I’ll loose, like posts, layouts , timetables,
I have seen a plugin that says it will do theme updates ( Easy Theme and Plugin Upgrades), is this a viable way to do it??
Thanks In advance

You won’t lose the current content ( pages, posts ) but you may need to configure/set-up all general settings. At some cases, if it’s too old, you may end up getting some errors need to be fixed.

If you need additional support to get these issues solved, I can offer paid service at Studio