I participated in many bounty campaigns in 2018
maybe 200+ projects I participate, and I work honestly and professionally.
Bounty hunting is not "work" - it is a method of rewarding people who make efforts to promote a project's funding by the owners of that project. It draws in influence and therefore "was" a method to market the ICOs.
Sadly, it has gone down from there to a group of cheaters who have cheated projects and projects which have been failures or scams.
but until now I have only received a few rewards, and many project managers do not send payments whether what happens, whether because of the low rank /or the reason is forgotten,
The bounty hunter does not have any legal route of claiming the project tokens if the project is a failure or a scam. It is a messed up situation and often there are different levels of conflict. Maybe the team had an internal takeover, maybe the manager and the team got into wrong grounds.
I have not participated in the bounty campaign for a long time, because of my hard work I feel unappreciated, can I claim a bounty reward that has been going on for a long time, because now I really need these rewards with value in exchange.
You might be able to claim them after contacting the owners. But honestly, getting a bunch of dust tokens - is it worth your time? The cumulative token sell value might not be even worth any bitcoins.
My rank in this forum is newbe, but I have registered in this forum for a very long time, maybe if I could make a useful article I could have a high rank.
Forum ranks will advance after you have received enough merits and activity. Writing articles will not get you merit but participating in community discussions might. But that is a topic for another discussion.