Posting videos

I constantly have this problem when loading videos on OF, mostly the longer ones (+10minutes). When making the post and trying to load video from the gallery, first it seems to be loading but then the post is empty, what’s up with that? 😃 And sometimes I have try to load the video like multiple times/day before I succeed to get it there. I’m losing my mind with this problem, is there any solution or is there just something I don’t understant? 💀😅

Also, I edit/put my clips together videos with CapCut, I don’t know does it matter but just for to know! 😊