Hello,
You need edit the file wp-content/themes/woopress/framework/shoercodes.php (find the section “! Share This Product” on line 1704), to change links you need edit the code, for example for Twitter <a href="https://twitter.com/share?url='.$permalink.'&text='.$post_title.'" class="'.$tooltip_class.'" title="'.__('Twitter', ETHEME_DOMAIN).'" target="_blank">
and replace https://twitter.com/share?url='.$permalink.'&text='.$post_title.'
with a link to your Twitter account.
Thank you.
Regards,
Eva Kemp.