Your video clips are going into the "New" folder. Perhaps it is set to expire videos after 1 day?
Does seem rather unlikely if you actually have 2.55 TB of clips though, on motion-triggered recording.
Could be a corrupted clip DB. In the local console, right click a clip, choose Database > Repair/Regenerate. Be aware this will prevent recording from happening until the repair is complete, and it is a long, slow process.
The image you posted regarding clip recording path and clip limit by size or time is for "Alerts"; click on "New" to correctly depict what those settings are (I'm sure you know that, probably an oversight when you posted the screenshot).
Could be a corrupted clip DB. In the local console, right click a clip, choose Database > Repair/Regenerate. Be aware this will prevent recording from happening until the repair is complete, and it is a long, slow process.
FIxed! Thanks everyone, right clicking a clip and choosing repair/regenerate did the trick. I have alerts showing up since that day for all cameras (only had to repair one clip from any camera). Thanks for the suggestion bp2008!