SpaG marks for typed essay

I am allowed to type my gcse exams - when i did my mocks, i typed for most subjects and all of my teachers gave me spag marks (in essay subjects) apart from my history teacher who said she can’t give me any spag marks because it was typed - this is worrying to me because spag marks are kind of important especially in english language but i don’t know if i’m going to be able to get them ! and i’d like to know so i know which questions type for and which to write for ! does anyone have any idea about this, anyone else type their exams, did it affect your grade? also i’m not exactly which forum this should go on sorry.