Do you mean your TikTok app started showing ads again or that you patched a new APK and that one isn't blocking ads? Regardless, mine is working fine. Consider repatching?
Yes and no. There isn't a "TikTok ReVanced" but you can use ReVanced Manager with a TikTok APK to remove ads. The patch is called "Feed filter" and also removes some other things from the videos. Look it up on your Manager app to see the full impact of the patch.
There's also a bunch of other TikTok specific patches that might interest you.