WP site broken after update and can't get help

Hey, I am using a theme by Dankov themes and it’s been great. However, updated to the latest PHP and WP and the whole site is broken. Desperately need help have paid support but nobody has replied to my ticket. Please I really need help to resolve this issue.

Assuming that the paid support you have got via ThemeForest and the author is responsible to make the necessary changes but if the theme is not compatible with the PHP latest, you don’t have much options to change the PHP version again.

Apart from the theme support ( The issue you’re having may not be included to the support ), if you want additional support to get the issues fixed, I can help you on this. Feel free to contact to discuss the details

The paid support is an absolute farce. The developer is even worse. So after much headache and reading, I simply retro-graded everything and the site is working if only limping along at the moment. I am in the process of correcting all the errors now. Thanks anyway