Uninstall plugin

I originally had a question about payplan but considering I cannot use easysocial from my admin section. I need to ask you if you can uninstall this Simgallery plugin for me. I was trying to set up my profile types to work with payplans but now this plugin is causing major problems. I have contacted them but hey are no help.

My questions about payplans was when users sign up will they directed to fill out the rest of the registration info. I wanted to test this out but this plugin is stopping me.

Could you please look at this ? This is the error I get when I got easysocial :

Warning: require(/home/nexttopmodel/public_html/dev/gaze/components/com_simgallery/helpers/core.php): failed to open stream: No such file or directory in /home/nexttopmodel/public_html/dev/gaze/media/com_easysocial/apps/user/simgallery/simgallery.php on line 22

Warning: require(/home/nexttopmodel/public_html/dev/gaze/components/com_simgallery/helpers/core.php): failed to open stream: No such file or directory in /home/nexttopmodel/public_html/dev/gaze/media/com_easysocial/apps/user/simgallery/simgallery.php on line 22

Fatal error: require(): Failed opening required '/home/nexttopmodel/public_html/dev/gaze/components/com_simgallery/helpers/core.php' (include_path='.:/opt/cpanel/ea-php71/root/usr/share/pear') in /home/nexttopmodel/public_html/dev/gaze/media/com_easysocial/apps/user/simgallery/simgallery.php on line 22

thanks