Do bounty campaigns that pay in BTC/ETH ever work the way they're supposed to?
In the time I've been a member I've attempted to participate in 3 bounties that all claimed they'd pay out in BTC and/or ETH. The first one (FUNDCRU) was supposed to last 4-6 weeks with weekly BTC payments. I received payment for the first week, but then when it came time to be paid for the second week the devs announced that they were suspending the bounty campaign indefinitely. No payment was ever received for week 2, and they never locked the thread so some poor fools kept reporting their work all the way through week 6. The second one (Private City) claimed they'd be paying out in ETH. The campaign manager pretty quickly closed the thread after citing problems with the project dev and no payment was ever received. Now I'm on my third one, the infamous "C." In case you don't know what happened: the original bounty thread claimed that they would be paying out 15 BTC (or ETH if you so chose) over two campaigns. The first payout was supposed to happen on December 16th, but the dev asked for 72 hours to calculate all the payments which made the new deadline December 20th. As of now, no one has received any payment. They keep claiming they're going to post a BTC and an ETH address so people can check the payout transactions, but so far all they've done is add a little line or two to the post every day to maintain the illusion of updates.
I'm beginning to think that any campaign that isn't going to pay you with their own token is just looking to get free work out of people by promising something they never intend to deliver.
Your camp stops because they had failed and their expectation to get more traffic/views, and maybe they doesn't have any huge balance to support their camp that's why they fall for so early since sig campaigns are not guarantee anything to its advertisers and they should have some another option to get spread their words and get more clients.