Shame on You, Microsoft; Outlook for iPad is a Mess
I’m a slave to Outlook and OWA for work, no way around it. I use the native iOS email app on my (work-issued) iPhone. On my personal iPad, which is rarely used for work, I use the official Microsoft OWA (Outlook Web Access) app. I launch the app 0-4 times per day, usually 1 or 2. Approximately 10-25% of app launches result in this update state where I cannot do anything, I must wait (look at the banner along the bottom):