if statement GoogleSHeet

i have transferred this xls into G SHeets but the IFs dont work in Cells U9 onwards. I know the tick boxes dont work because of no WIngdings in Google however if we enter R for a student in cells E9, F9 G9 etc, eventually U9 should say Pass. More R's along the row means U9 should say Merit etc

https://drive.google.com/file/d/117n553pXdiaC7MEOZ3xGphmrXJn50L_s/view?usp=sharing