Pre-Fulfilment rate

Hi guys, so I started my Amazon seller journey on May 15 and I have got about 10 orders since. Out of 10 I had to cancel 1 order due stock issues and today I will have to cancel another order due to my error. My pre fulfilment rate will go to 20% in for the past 7 days Should I be worried of risk of deactivation? What are my options right now regarding the second order?