No sale

Hey guys i need some advices. Can you listen to my music tracks and tell me what's wrong ? It's been a while that i didn't get any sale , my sales were growing but after the website rebranding , no sale during months. I'm still uploading new tracks regularly but i'm starting to wonder if i'm not wasting my time here. In other marketplaces i upload the same tracks and i make sale after few hours. It seems that only a bunch of persons are making regular sales here. I'm wondering how the Pond5 promotion algorythm works. 50% of revenue should give us more exposure.