I've taken the test 3 times - twice in South Korea and once in the US. I've never had any connection problems or any problems with ProctorU.
I've always used WiFi and my 2018 Macbook Air.
I am not a tutor but I have a list of contacts whom I got tutored from in South Korea. I can send you a list of their emails. Please leave your email and I will send the list to you.
App farming... normal. Helps your selectivity metric if you have a ton of apps relative to actual offers. Not to say you couldn't get in, but thats what those emails are.
... and geometry compared to their South Korean counterparts (who generally watch ... to comparable instruction as in South Korea. If (E) were false ... in the US than in South Korea, the causal relationship drawn ...