Anyone's videos got muted?

Hi there. I am a content creator and i make Lyric Videos. 2 hours ago, everything was fine. I go on tiktok now and 90% of my videos are muted. Everything from 25th of January, onwards, i cannot recover the original audio of.

It happened without the notification of "audio muted due copyright"... i should have recieved hundreds of those...

"The copyright owner hasn't made this sound available in your country" is what i'm seeing now... out of the blue... some of my videos have been on my profile for a year, a year and a half... WHY NOW?

Am i alone on this? Is there some sort of fix around it... i don't want to lose all my hard work...