declining HPU offer

hi guys, i come on here to ask how to decline the acceptance letter from HPU? i tried looking all over the portals and couldn't find a button or specific link to decline it.

with the other colleges I applied to, the decline button was somewhere within the portal, so I am a little confused. this is my first time applying to colleges so i'm a little lost and need direction. any information would be helpful!

thank you :-)