I've updated my iOS app (A simple photo editor) to version v1.2. After the app being approved with a status of "Ready for Sale", it wasn't showing up many hours

I've updated my iOS app (A simple photo editor) to version v1.2. After the app being approved with a status of "Ready for Sale", it wasn't showing up many hours. After 8 hours later, it was updated. Is is caused by App Store cache? The expiration time is too long. I wonder if there is any method to accelerate the update? The photo editor is written in Swift, here is the link to app store: https://apps.apple.com/us/app/a-simple-photo-editor/id1571867466?uo=4&at=11l6hc&app=itunes&ct=fnd https://apps.apple.com/us/app/a-simple-photo-editor/id157186...