Thanks, I was away for a while and they were all gone when I just checked. I have added another auto so will see if it makes a difference. Maybe twice as many loans would let it keep up with the repayments.
It is now two and a half months since all my loans have been bought at 14% and 3 months after starting at 12%.
However my XIRR seems to be unable to increase now and is stuck at about 10%, presumably because repayments received from Friday morning until Sunday evening are not reinvested by auto invest until the Monday morning, leaving dead money for 3 days per week.
It seems to be misleading to offer investors 12 to 14% on very short loans when it cannot be achieved.