How to Scan Good

My scanner is a Brother J475DW. I have just upgraded to Windows 10. In Win7 I could preview and then scan, cropping as I wished. With Win 10 I cannot scan jpeg at greater than 300 dpi, and when I use the Brother app I can choose my resolution but cannot crop and preview. Can I tweak one or the other to allow me to do both?

http://support.brother.com/g/b/faqtop.aspx?c=us&lang=en&prod=mfcj475dw_us_as