If you are happy with your website that uses our original website theme and designs, then no changes are needed at this time. Your website will continue to work with the original theme so you are not required to switch to one of the new themes.
However, the original theme is no longer supported by the editor so if you want to make changes then you will need to choose a theme in the new website editor experience and then begin your edits. Your existing content will be preserved when you switch from the original legacy layout to a new theme so the edits required should be minimal.
Please contact our support team if you run into any issues with transitioning from the original theme to one of our new themes so we can help you get those resolve as quickly as possible.