Using scrivener on multiple devices but with same manuscript

can some one tell me i am new to scrivener how can i get to use scrivener on all my devices i downloaded to all of them but when i go into the manuscript to update it from another device it does not show it in the scrivener saved… how is that? i want to be able to write and update my chapters no matter what device i am on is this possible?

https://scrivener.tenderapp.com/help/kb/cloud-syncing/using-scrivener-with-cloud-sync-services

There is no Scrivener “cloud,” so you’ll need to use whatever service you prefer to transfer projects between devices.

Note that iOS Scrivener only supports Dropbox for synchronization.