if you want to run TikTok within BlueStacks, you can only run it on the "Pie 64-bit" instance
unfortunately, the "Pie 64-bit" instance is totally incompatible with Hyper-V, meaning you have to pick one or the other, not both — Hyper-V enabled, or TikTok-capable
if you get the error message "Pie 64-bit version is not supported by your Operating System", see here for the fix