Kindly make sure you update the theme to latest version as you are using an older version which may not be compatible properly with latest WordPress standards.
Make sure you update your theme by following standard procedures like taking full backup of your website etc to avoid any loss of data if anything goes wrong in the process.
Kindly confirm if you having any error ? Also make sure your server settings are set as required to make sure it does not stop just due to size or timeout.
Kindly make sure all required plugins are installed and activated. Also share your admin login credentials as a private reply so I can have a check for you.
By increasing you mean width or height of the logo ? Just send me your dimensions along with admin logins and I will do that for you. Put your credentials as a private reply.
Simply download full package from your download page and it (child theme) will be included in that package as well. Install child theme and activate it, that’s it.
You are getting error because you are viewing a https website over http while your link should be https://lakequartz.wpengine.com/design-gallery/ because in such cases server host stops providing data.
