Welcome to Justanswer.com, my name is ***** ***** I will do my best to assist you.
Lets try the following.
Double-tap the screen with three fingers to switch off the zoom function, sign in normally.
Then disable the zoom function from Settings > General > Accessibility
I strive to provide great service, and greatly appreciate a rating of excellent ( 5 stars ) selected and submitted below this answer or at the top right of the screen. I always answer follow up questions.Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.