I installed the theme and imported demo data. Then I realized I am unable to change menu size and also a logo size thru the Theme Options. I have been trying to solve this problem thru Extra CSS Content, but it does not work. So I cleaned up Extra CSS Content. After that I tried to change menu size thru Customize and discovered preview is working but all of the changes are not saved for the web.
Yesterday I deleted everything from the web (including the database). I did a fresh installation of WordPress and the theme on a different place (hosting is the same). Problem persists.
I am using WordPress 4.4.2, PHP 5.3. Could it be a compatibility problem?
OT: One more issue… I am getting an internal server error when trying to save Theme translation.
Thank you for any suggestions