No audio upon upload and no subtitles

I edited my video in davinci resolve perfectly fine. When watching the finished product through the viewer in the Davinci Resolve window it has both audio and the subtitle text boxes I added in throughout the video. All was well until I headed over to deliver, selected Youtube, and input these settings.
1920 X 1080 HD (resolution)
23.976 (framerate)
MP4 (format)
H.264 (Video Codec)
All Timeline Tracks (Audio)
AAC (audio Codec)
Same As Project (data burn in)

Then I uploaded directly to youtube. Once it was done uploading, I headed over to the video and there was neither audio nor subtitles present.

What did I do wrong here?

I edited my video in davinci resolve perfectly fine. When watching the finished product through the viewer in the Davinci Resolve window it has both audio and the subtitle text boxes I added in throughout the video. All was well until I headed over to deliver, selected Youtube, and input these settings.
1920 X 1080 HD (resolution)
23.976 (framerate)
MP4 (format)
H.264 (Video Codec)
All Timeline Tracks (Audio)
AAC (audio Codec)
Same As Project (data burn in)

Then I uploaded directly to youtube. Once it was done uploading, I headed over to the video and there was neither audio nor subtitles present.

What did I do wrong here?

Data burn in means a different thing than subtitle burn in.

In terms of audio. I would check your bus configuration and assignment under the fairlight menu.

Choose Main 1 (Stereo) for audio output.

I don't do Captions, so I can't help with that.

YT should also respect SRT subtitles, give them a try. And audio? Which codec did you use?