How to stop the forum sending e-mails

Hope someone can advise on how in settings you get the forum to stop e-mailing you on every thread, bloody inbox is chock full. Thought I had unsubscribed but then go back into settings and I am subscribing again.

 

Clicked unsubscribe to everything but still I get e-mails! Tried clicking on the unsubscribe link on the e-mail and it just says invalid request.
Also still have no idea when I get a like on a post who has liked it or what post it is?