hey i just got the pdf but many pages appear to be almost entirely unreadable, with a lot of text on white backgrounds simply not appearing. is there any way to fix this issue? the missing pages are 7, 8, 18, 19, 20, 21, 42-51, 81, 82, 119, 126, 128, 129, 130, and then it becomes very hard to track as page numbers simply stop appearing, but overall i'd estimate roughly a third of the book is unreadable for some reason. it's only text on white backgrounds, all of the missing pages still have the colored sections and anything written on them.
Edit: issue is fixed by opening in edge instead of chrome. this isn't totally ideal but at least i can read the book i bought lol and this may be an issue specific to me.