Windows + Davinci Resolve not syncing

Been trying to get audio to sync in Davinci Resolve 15 with no luck, starting to regret getting these.
Running blackmagic production 4k and a mixpre-3. I have two tentacle e’s, they sync fine to eachother. Footage from camera has the “clicking” from the timecode. Mixpre shows timecode from tentacle fine. I load audio files into tentacle timecode tool and export as pass through. Load video and these new audio files into Davinci Resolve. Select video files and choose “update timecode from audio – tlc” then select all and click auto sync audio based on timecode. Aaaaaand it syncs random files, clicking is still present. Its syncing files from completely different days.
I’m pretty annoyed. There is NO documentation anywhere I can find for using the windows software or for any workflow. Why make a version for windows and then not provide any documentation on how to use it? Its my understanding I’m doing it correctly but there’s no way to check since there’s no documentation. Is it just davinici? Is there another program I can sync in prior to importing to davinci?