I hate to be the bearer of bad news. I sense changes were made and now videos cannot be updated. One can go through the motions of updating after removing the old one yet the old one remains. If the page is refreshed sometimes the updated one shows up but is unplayable with an error 224003, then it reverts back to the original one. Also, there were two boxes last time I noticed, now there is one. People using Chrome and Edge could not view the video I uploaded. Firefox was okay and so was Safari.