Hello Zqlimy! If you're looking for a more advanced table option for your site, you may want to try embedding a dedicated table function, like Google Sheets or similar. That will give you a lot more control, with matching complexity.
The app does not currently support inserting rows or columns except at the end of each row or column - this is something that we'd like to add, though.
Unfortunately, no. You can only add rows to the bottom, so to add to the top you'd need to remove all of the rows, add your new row, then add the rest back. It's probably faster to make a new table than doing that, though. Sorry!
