If you need to download one or two small files, patience is your best (and free) tool. If you frequently download from UploadHaven, look into a (Debrid). It is the only reliable "leech" method currently working that won't risk your PC's security.
Some services implement temporary or permanent bans on accounts that are deemed to be leeching excessively. uploadhaven leech
High rates of leeching can lead to a decrease in file availability over time. If files are not seeded (uploaded) back into the system, they may eventually disappear. If you need to download one or two