I’m new to this and have no clue how this works. I paid for 3 months and when I try to open a document for my marine biology class and when I do most…

I’m new to this and have no clue how this works. I paid for 3 months and when I try to open a

document for my marine biology class and when I do most of it is blurred out and have no clue why. can you help me? thank you very much