1.Theme is missing the style.css stylesheet error
Read about it here https://help.market.envato.com/hc/en-us/articles/202821510-Theme-is-missing-the-style-css-stylesheet-error
2. How do I get my purchase code
Read here https://help.market.envato.com/hc/en-us/articles/202822600-Where-Is-My-Purchase-Code-
3. Maps does not work, how do I generate a Google Maps API for my website?
We know that a problem on the map side appeared lately. This is happening due to some very (big) changes that were made on Google APIs: