The data at the bottom appears to be outside of the table. Unfortunately you cannot resize a table with On line excel so try the following procedure to resolve the problem
- Select all of your data and Copy.
- Select a cell away from the table (with at least one clear column or row separating your selection and the table)
- On the Home ribbon select the Paste DropDown (Don't right click because of limited Paste option.)
- Select Paste formulas.
- The copy of the data will now be outside of a table.
- Press Esc to clear the crawling ants around the original copied data.
- Select all of the original data.
- Towards the right end of the home ribbon select the Clear DropDown and Click Clear All.
- Now copy your previously pasted data back to the original position
- Select all of the data and insert the table again so that the table includes all of your data.
As to how some of your data become separated from your table I do not know the answer but most likely something that you did not do correctly.