Site identity – can't upload or find the logo

It’s frustrating and a shame that this beautiful theme and its supporting doc have many minor problems and bugs.

1. Warning when installing plugin: sprintf(): Too few arguments in C:\xampp\htdocs\wp-admin\includes\class-bulk-upgrader-skin.php on line 152
2. Error in “Read more” panel:
   1. Theme activation: “THEME NOT ACTIVATED” while it’s activated.
      1. Ok, I got it. It requires the purchase code to activate. One error in “You can learn how to find your purchase code here”. There is no link in “here”.
      2. After I put in the purchase code, it’s still showing not activated.
      3. Another error, the not activated msg remains after I entered the code and “Theme activated”
   2. Install Plugins in “Theme Update” shows “Sorry, you are not allowed to access this page.”
   3. Support, “YOUR SUPPORT HAS EXPIRED.”. I entered the purchase code when prompted.
   4. Documentation, the files and directories in the downloaded package .zip file are different from the doc.