Hello Gavin ,

Sorry for late reply to this,
Can you provide us with your following details so we can help you check on this?
#1. Joomla backend access
#2. FTP access
#3. Provide us some screenshot which are you referring to

Ok i got the images bigger, but its in the middle of the screen now...
Also its not responsive, is there a way to make the images responsive?

3. Provide us some screenshot which are you referring to
Screen Shot attached (http://wesupply.co.za/proof/vernooy/galleries/families).

Thank You

hello Gavin,

Sorry for late reply to this,
I have checked in your site, it seems like you have applied some custom css code in your -> JoomlaFolder/templates/yoo_stage/css/custom.css , if you remove the custom css code, then it will show properly. check my screenshot below.

Also, It seems like your gallery image already show 800 x 800px , check my screenshot below.