That sounds like you don't have matching physics models for each part of mesh. Is it a single mesh, or multiple parts uploading as a linkset? You must have an individual physics model for each individual mesh, named in the same order so the uploader can match them up.
Those who have large enough followings can use alternative platforms like Patreon, which allows fans to directly contribute to their favorite creators, often with tiers that give access to extras, merchandise, or so on for higher donations. YouTubers also get sponsorships directly from companies, sell merchandise, or share affiliate links.46 As an example, Ellis has over 1,000,000 subscribers on YouTube. She estimated she makes five times as much from Patreon and twice as much from sponsorships as she does from YouTube.47