All I can say I have have uploaded a couple videos from my account ( @ericwilson ) and didn't have any troubles but I had difficulty about 50% of the time uploading to dtube.

I would highly suggest swinging by the official DLive discord at https://discord.gg/UPx87EE and asking for help there, the DLive team is pretty active and I am confident that you can get an answer to the technical questions you may have.