I think you have to appove it, If you’ve got a usb adapter you could try plugging in a usb mouse, That way you could unlock the screen and at least upload to cloud storage using the mouse instead of the touch screen, not sure if that’s blocked from the lock screen as well though
Edit: Just tried on my P30 Pro, a usb mouse can be used on the lock screen to unlock, so that would be the way to go :)
I think from an apps perspective, it looks less “strange” so anything out of the ordinary and a lot of apps just flag as “must be rooted”. Graphene has a lot of changes for security reasons that make it look “out of the ordinary”. It’s sad because if the apps were designed to understand the changes implemented in Graphene, they’d understand it’s probably even more secure than a regular Android ROM.