Tiktok sending old messages out of nowhere.

Guys, please tell me I'm not the only one going through this.

Recently, two of my friends got DM'd by me on tiktok, but it was old messages I sent a long time ago. And they simply were sent again, without any context. I didn't do it. No one has access to my account.

The messages appear to them, but not to me.

My friend said he's been getting old messages from me for about 30 minutes now, and i barely touched the phone in this time. Kinda creeps me out even.