If you are currently a free user and would like to upgrade to Pro version its quite easy. And the good news is all your content, settings will remain as it is even after switching to the Pro version. You don’t need to redo what you have already built with the free version.
Unlock Pro Features
Upgrading a Tassos.gr extension from Free to Pro is by no means different than installing a new extension. You do not have to uninstall the previous version; in fact, you MUST NOT do that. Simply install the Pro version over the existing Free version as you would normally do with any new extension installation. That's all! All your settings are preserved.