Today Twitter has been removing tweets from all crypto related channels. My Channel went from 1500 tweets to 20 tweets today and many other crpyto channels have had all their tweets removed. What does this mean for Bounty campaigns that send out stakes for tweeting? All my hard work of re-tweeting and tweeting is gone... 
Try and check twitter's rules and regulations/ terms of agreement. There is a good chance that the reason why they got deleted is that you have violated some of those. Try and ask twitter directly as to why your tweets are gone and you probably can still get them back if you know for certain you have not violated any of their terms of use.
If all fails then you just need to work hard as much you did the first time to fulfill the campaign you're on. Just stay positive man.