Usig tiktok on blue stacks. You need to first upload the video you want to post to the bluestack emulator.
This is via the media manager option/ import from windows/ Mac. Then upload the video from the emulator to tiktok.
It's however not automatic that it will work out, If it doesn't you may consider checking your device for a possible
malware and flashing it out, or trying other emulators.
Yes I heard someone created an account from a rooted BlueStacks then use a phone to create a video , draft it , then upload from BlueStacks. Always add a custom hashtag to see if you are shadowbanned. You can also create the account from your phone and then connect it to BlueStacks after clearing data on both sides. Change region and content language..