I would like to post a contest on one of our client's business page. We are trying to use Rafflecopter to manage the contest, but when we try to integrate it says "this function is currently unavailable." Is there no longer a way to integrate with things like this? If so, please let me know how. If not, what should we be using instead? We need the ability for people to enter the contest by submitting their email. Their email is then dropped into Mailchimp.