Thank you so much for your question.
1. You mean to say, you want to remove the Ads banner and change the logo size bigger ? If so, please find the code inside acmethemes/core.php you will find the custom-logo size and try it by increasing the height and width. If you want to make the logo center, please read this blog post here.
If you have any problem regarding our theme, please let us know. We will do our best to solve your problem.