I don’t know if your original issue was ever resolved, but I was answering another community member’s questions about Dropbox and saw that you mentioned it in your original post:
I created a new topic in Tips & Tricks which will hopefully be helpful to others, and it might help you if you want to share your bear video (or others) from Dropbox. Here’s the gist:
That doesn’t help with your entire initial issue, but if you were successfully able to upload your video to Dropbox, then that might help you share it in the future, maybe to Captured on Wyze! 
Welcome to the Forum, @marilund1! 