Dual Page Display Do Not Correspond__Solved

About 2 months ago, I posted my problem here:

https://discussions.apple.com/thread/251891721

I want to update, but Reply is greyed out, even though I am logged in. Instead, Apple Support page asked me to start another thread, hence this one: 😂

The problem is solved by using another PDF reader—PDF Expert. Under its “View” tab, there are these two options: “Two Pages” and “Two Pages But First Single.” Toggle between the two; the left page and the right will correspond.

PDF Expert is free on both iOS and MacOS platforms.