WordPress Theme LT Charity - Item Support

I would like to know how do you edit the home page slider with our own images?
The meet our non profit team picture on home page how do we edit this?
the activities section as well I am wanting to edit and customize with our own content?
I have managed to use this template extensively. When loading the site on a mobile device it is responsive which great however on the top right there is what seems to be "chinese" writing to access the menu. How do I change this english??
The address is legacy.dbchoir.com

I have not updated it on my account because once we have the website ready for the public we will put it on its own domain altogether.
I am sorry not entirely sure on what this actually means???
I have created you a user and given you Admin access to our site. You should received login details shortly. Apologies for the late response we had some connectivity issues.
I have just emailed it to you.
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Item Name:
LT Charity
Item Version:
$29.00 $21.75
Regular License
This item may be used for a single domain only.
$38.00 $29.25
Extended License

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