Update to 2.0.0 – Major Issues

My site just updated to version 2.0 from 1.x and completely broke the website. Using a child theme, the header.php and footer.php files both contain instances of the function of_get_option() which no longer exists in 2.0, so it throws a fatal error.

Additionally, most of the customizer options have been lost, like the top bar phone and social media, logo and favicon settings, and probably quite a bit more.

Please make the update backwards compatible and release a 2.0.1 if possible. This level of disregard to backwards compatibility is something that makes me not trust a WP theme developer for future use/purchases.