Hello all! This year I've noticed that often times Ill get conversions on a new campaign on the first day but then Ill never get conversions again after that. I've tested across various verticals from leadgen, to rebills, and even PPCall which I've done a good bit of this year as well. I've also this tested across various networks and between 'website clicks' and ppe in FB not to mention in various FB accounts. I feel so certain that I am getting good quality traffic in the beginning of a new campaign, but then never again for the lifetime of the campaign. Any ideas on this? The only thing I am coming up with is to drastically increase my bids and bid much higher than the "recommended" Facebook bids versus just letting Facebook get the most clicks for the best price? I'd appreciate any help/hints/clues on this! haha! Also feel free to add me on Skype, its the same as my username here 
Is it all in a particular country? Unfortunately if you get a conversion initially and then none thereafter, repeatedly, it is probably your campaigns, not FB...
What's your sample size? How many campaigns / spend on each?