Hi Talita,

Thank you for reaching out.

We acknowledge that the new Reader represents a notable change and you have been experiencing issues while discovering Zoom/Magnify functions.

You can find the Zoom features in the bottom right corner by clicking on "+"/"-" option > Moving the Slider up/down as per zooming requirement on PDF. <Screenshot Attached>

Additionally, if you would like to change the Page View Setting you may do so by clicking on Page icon in the bottom right corner>Click on More in the opened Menu > Change the Page view/Zoom as per your requirement.<Screenshot Attached>

To retain the customization for all PDFs, Please go to Hamburger menu > Preferences > Documents > "Restore last view settings when reopening the documents".

Hope this resolves your issue

Thanks
Ishita