Unable to open iOS App

After updating some other apps last night, I now can’t open the Nextcloud iOS app. I don’t think the Nextcloud one updated, so I’m running whatever is the latest version, with my Nexctcloud server running 16.0.4.

When I try to open the app, I see the splash screen and then it flashes off and I’m back to the menu. I’m tempted to just delete and reinstall, but didn’t want to lose some of the settings and track of the media I’m backing up to the server.

Any ideas?