Twitter traffic questions

I've been using a Tweetattacks wait & reply method to advertise my e-mail submits, but after I changed networks to one that was okay with social advertising, my conversion rates went through the floor. They used to be at least 1% (800 clicks with 9 conversions over a couple hours), but just from running the campaigns today, I'm at 41,482 clicks with 14 conversions. This is on an offer that's exactly the same on both sites, but with a slightly different landing page which wouldn't make such a big difference and I'm positive the network isn't shaving my leads.

Does anyone know of any way I can possibly fix my conversions or any reason this might be happening? I could understand it being a problem of looking "spammy", but that would be more of a problem of not getting enough clicks.

Thanks in advance for the help.