sync never starts converting?

howdy folks,
Recently rebuilt my raid, and ever since plex never beings the conversion process of syncing.

I have confirmed I have plenty of space in the Cache/Transcode folder (multiple terabytes), streaming a video that has been forced to transcode works without a problem, and there are no pending transcodes in the system (at least that I can find).

What can I check next to figure out why plex is no longer syncing?

Check the conversion page to make sure it’s not paused.

that was it! But how did it get paused in the first place?