Tutorial : How to use google sheets using Google Sheets android app

Tutorial on how to use google spreadsheets on Google Sheets android app

[AshanBopitiya]

is there a way to make the Formula bar much bigger

[HisBlueEyedBlondie]

Can you format the sheet to be landscape instead of portrait?

[dr.]

I have changed/added-to and existing sheets file on my phone, tried to open the file after changes made, then the app stated "Not saved properly - with options of Ignore or Restore Document".
My question is what do I choose (Ignore or Restore Document) to open the file with my new changes to it. I know that one option will bring back the original prior to to the changes/adds?