There is a sharp distance between paying out to your campaign participants and paying out to your own customers. It doesn't matter whether this campaign pays out or not if they are going to steal their customers' own money.
That's right, we don't know if they always take funds every week from customers. I'm afraid that's what happens. Hmm, it's better to leave it than to be in trouble.
If you read the scam accusation against them
https://bitcointalksearch.org/topic/livecoinnet-scam-5159692 there's a post in there with more cases of Livecoin fraud.
FWIW, a service with as much negative trust as this wouldn't be allowed to buy forum ad slots, so in my opinion people should be discouraged fom advertising such services (remember the 1xbit fiasco?)
Why would someone want to display advertisements that naive people will click on and expose them to the risk? There were even four or five campaigns with open Hero/Legndary slots very recently so it's not like they had no other way of earning money.
Look at the previous experience, it already has a bad reputation, it still won't be good if the fraud problem hasn't been resolved. They are currently not displaying the spreadsheet as it is private so it has been found that their behavior is always indecent.