It has now been almost a month since PHP 7.0 has reached “end-of-life” (EOL) status. Please do not use PHP 7.0 any more as it’s no longer supported and will be vulnerable to new security issues or lacking newer bug fixes. This should also be a red flag for you to avoid any themes or plugins that are not compatible with newer PHP versions (PHP 7.1, 7.2, and upcoming 7.3).
Again, please upgrade your site!!! In about 6-12 months, we will remove PHP 7.0 from our servers to force all clients to upgrade and stay updated. We keep our servers updated and likewise, you must keep your sites updated!