hi everyone, as you can see i am new to this forum. and i would like to thank everyone in advance here, i am really good CSS guy but not so much with php and coding. but i would love to help and be helped as well

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here is my problem that i been having, i have a site that is running on wp with custom theme ,
my site is online directory, but it seems every time i add a new site with the url. the theme calls out the url of the site takes a screen shot and stores it in s.wordpress com,
how can i change that for me to upload the website image ( logo instead) from backend of course , here is the codings i can find
PHP Code:
<div class="store-image">
<a href="<?php echo appthemes_get_custom_taxonomy($post->ID, APP_TAX_STORE, 'slug'); ?>"><img height="89" width="110" src="<?php echo clpr_store_image($post->ID, APP_TAX_STORE, 'term_id', '110', null); ?>" alt="" /></a>
and this
PHP Code:
<div class="thumb-wrap"><a href="<?php echo $url_out; ?>"><img class="store-thumb" src="<?php echo clpr_store_image($post->ID, APP_TAX_STORE, 'term_id', '150', $stores_url); ?>" alt="" /></a> </div>
to be honost i just grabed what ever looked like the right code for me , if not i would grab some more codes as well