how do I reduce the size of the spreadsheet window? can't grab a corner...

If you can't grab the corner because that corner is off screen to the right, you can click in an empty space of the bar containing the 'traffic lights' and drag left until the edge, and the rounded lower right corner appear, then move the pointer to that corner.

At the corner, the pointer arrow should change to a double-headed arrow. Drag the arrow to pull the corner up and left.

Regards,

Barry

Working fine here.

SG