Hello Danamm88,
Thank you for using our theme. For changing header logo position to right, firstly create child theme. To create a child theme check this URL;
https://codex.wordpress.org/Child_Themes
Now, if you have knowledge about code structure you can edit yourself by editing inc/hooks/header.php or it can do from CSS. Paste below CSS code on Custom CSS. To find a custom CSS section, go to appearance > Customize > Theme Option > Custom CSS.
.wrap-header .col-md-3 {
float: right;
}
And also for login button you need to customize or may hire a customize person.
Hope this will help.
Regards,
eVision Themes
Support Team