You would need to download your video from the My Videos page and use the Facebook website or mobile app to post your video.
If you have an iPhone and need assistance saving a video to your smartphone, click here.
If you need assistance posting a video to Facebook, click here.
When is support available?
Read this link for support hours: https://support.wavve.co/en/articles/5373873-when-is-support-available-to-help-me