Share for Review does not seem to be working even after another update.

I sent an invitation by "Invite Only". My client received an email with a link and the only 2 options available for my client are "Sign in with an Adobe ID" – 99% of my clients will not HAVE or NEED an Adobe ID.

The second option is "Enter a password if one has been shared with you." Unfortunately, I was not given the option to set up a password. However, when posting publicly I could.

And lastly, when I update the file (link), there was no notification email sent to inform my client that the file had been modified, yet I am getting email notifications. Maybe that's because I have an Adobe ID.

I tried creating a new test but it look as though all the comments go away if one chooses that route. But if I have to go that route, honestly, I'd rather just keep emailing clients.

@Adobe, right now, all the potential is there for something great. However, this is an epic fail in my eyes. And mostly, I'm really getting tired of feeling like I'm a beta tester.

@Adobe: One last thing, when you fix this, as I am sure you will. MAKE IT THE SAME ACROSS ALL OF YOUR PRODUCTS FOR CONSISTANCY. Please.

I am trying to use the new Share for Review option. As outlined here, I should be able to switch the access options from invitation only to public which should give me the option to have people without an Adobe account review the content by simply inputting a password for access. However, I cannot switch from invitation only to public as I simply have the invitation only option as a fixed option and no dropdown to choose from. Is there an option somewhere that I need to enable first so I can publicly share these files for review? As of right now, as helpful as the review function is, I cannot use it if my reviewers first have to sign up for an Adobe account. That kind of defeats the purpose.

During this pandemic, I'm am trying to use the 'share for review' feature for a book I'm laying out. It is 600 pages, 300 spreads, about 333 MB file. It includes images and text.
I've designed other books -- the printer had no problem with the files
I'm using a Mac with InDesign 15.1.
When I tried to share the file, 4 pages - 2 spreads uploaded. I tried again and 8 pages - 4 spread, appeared for sharing. I didn't choose them, it is what InDesign randomly chose.
As an experiment, I created another file and tried to upload 100 pages. It worked.
I tried 200 pages. It didn't work. I received two different messages which I will attach. I tried to share a 150 page and received another artifact error.
Because of another message, I increased my cloud storage from 100 MB to 1 TB. So far that hasn't improved sharing but I wanted to make sure this wasn't the issue.
Is there a setting I'm not seeing or something I need to do first before trying to upload the complete file? Or is there a maximum number of pages before the share for review stops working? If so, it would be helpful to know in advance before trying to work with your help/support team who are not coming up with any help and referred me to this page.