Copy paste work entering data.

I am a free member. On the 10th day I was copying and pasting datas. After finishing copying and pasting data and submitting 9th data, the screen showed 11th day and 1st data. I was not able to
do anything on 10th day’s 10th data. What should I do to enter 10th day’s 10th Data. Experts, can you help me.