Shopee Product Manager interview questions

Got through 2 interviews after recruiter call, quite smooth and given the option to consider 2 roles that were opening in the past. Recruiter was very friendly and helpful in explaining.

They sent an invitation to assessment which consisted of 15 multiple choice questions. You have 75 minutes to answer them, must do it on a computer and provide camera & mic access besides entire screen capture. I probably got disqualified because I used pen and paper to do the calculations. After the test, I asked them how I should have done it, if I should have said my thinking process out loud or do everything mentally, but they never replied. I think the examination is faulty. This kind of test should be done on a live interview or have more clearly instructions as how they expect us to behave, if annotations are allowed, as an example.