Planmaker has crashed

[Văn Phước Nguyễn]

When I launch the programme, I change the font to Times New Roman and the font size to 12. However, when I select other cells, it reverts to PlanMaker’s default font and font size. I would appreciate it if you could fix this issue on both mobile and desktop.

[SuperTech]

Could you please share the complete details of 'PlanMaker has crashed'?

Regarding the font issue: this isn't the font changing on its own — you selected a different cell, so it's showing that cell's own formatting. That's expected behavior. If you want to change the formatting of multiple cells at once, select the entire range first, then apply the formatting change.