To use Uncode, please make sure you are running at least PHP 5.6 or higher. It is anyway recommended to use preferably PHP 7.2 as suggested in the official WordPress documentation. In fact WordPress recommends PHP 7.2 and for good reason.
Other PHP versions have reached the end of their life cycle and may expose your site to security vulnerabilities. There is a significant reason to no longer use old PHP versions, always update to the latest versions.
PHP 5.3, 5.4 and 5.5 have reached end of their life cycle and shouldn’t be used at all. PHP 5.6 will reach end of active support by the end of this year as well. While those versions should not be used, we do support them and they will work with Uncode. However, since they have reached the end of their life, issues that may arise can only be fixed to a certain extent.
Issues that you may experience are because certain hosting plans still offering outdated solutions and could cause a lot of issues for their customers and the themes they use. The themes are not to blame, it is the hosts who will not stay up to date with the latest PHP versions.
Since the only actively supported PHP versions from January 2017 onwards will be 7+, these should be the versions of choice and you should always look for a host who actively updates their PHP and MySQL versions. Keep also in mind that with version 7+ your performance should increase drastically as this benchmark shows. If you run into any issues, our support team will be there to help you. Simply submit a ticket and one of our support experts will help.
Verify your PHP version
You can contact your host to ask what's your current PHP version and ask to update if necessary. Some hosts will try to keep PHP limits low to conserve resources. Since you are paying for those resources, you should rightfully expect to be getting your money’s worth.
You can check also by installing the WP Server Stats plugin. This convenient plugin can help a non technical person to be able to verify the PHP version and diagnose server related problems.
Ask your host a new PHP version
The latest PHP version is PHP 7.2. If your host is giving you an old version of PHP please ask them to update it for you (it's free). This is something like your mobile company offers you with the contract an old iPhone instead of the new iPhone 7. They can generally do this for you in just few minutes.