Hi Ralph,
Our EcoHosting Theme works with PHP 7. We have checked the theme with PHP 7 and there is no problem. So, you could use the theme with PHP 7.
By the way, if you find any issue, then feel free to contact us. We are available to assist you.
Please don’t forget to give us ‘rating and review’ (on https://themeforest.net/downloads ), if you like our Theme and our support too. It will give us inspiration and make us more ‘happy’ to support.
Best Regards,
ThemeLooks Support Team