I cant save the coupon I created, happens nothing when I press save or save and close.
Can you provide more information? Is this a new installation of AwoCoupon or an upgrade? What version of Joomla? Do you have jquery being loaded globally in the site? That would cause problems. If you can inspect element in chrome, go to the console, try to save and see what error you are receiving that could help. If you like, happy to look directly at it if you can send private message with temp admin access.