The way that data works is it basically reflects the fails-to-deliver at the end of the day.
In other words there were 64,486 fails as of the 10th, then the new fails less the delivered shares from the 64,486 reduced the fails number to 211 on the 13th.
Then the new fails less the delivered share from the 211 increased the fails number to 14,053 on the 14th, etc.
What you have shown quite clearly is that fails-to-deliver, which MIGHT be a sign of illegal shorting when it occurs in significant numbers relative to regular volume and persists for a significant period of time, were not an issue at all for the period shown for CTIX shares.