I can't repost my videos because of this one bug

I don't know whether this is an issue regarding the OnePlus phone I'm using, because I am capable of reposting videos on my iPad. The problem here is that when I repost a video, the repost suddenly disappears out of nowhere. I redownloaded the app, I cleared the cache, but nothing worked out.

Update: it doesn't work at all. My account status is safe.