A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Try using INDEX rather than OFFSET to avoid volatility..I am giving just one way to create a dynamic range...This uses A1 as anchor.
INDEX(A:A,2):INDEX(A:A,COUNTA(Sheet1!$A:$A)),INDEX(A:Z,2,5):INDEX(A:Z,COUNTA(Sheet1!$A:$A),7)