To report a direct message:
1. In the TikTok app, tap Inbox at the bottom.
2. Tap the chat that you'd like to report. From here, you can:
༚ Press and hold a message to report that specific message.
༚ Tap the More options … button at the top to report the chat.
3. Tap Report, then select a reason.
4. Tap Report and block or Report, then tap Done.