When you’re logged into your iPhone, then synchronization is turned on automatically. But remember that you need to have iCloud turned on, and have space on it! This means that every change, like adding, deleting, or restoring a code/token, will immediately appear on other synchronized devices (with iOS and connected to the same iCloud account).
All the codes stored in the iCloud are protected by Apple and our own encrypted layer of security.
If there is a problem with synchronization, please go to Settings – 2FAS Backup and turn it on manually.
Despite the cloud backup, we suggest doing an export of the backup file with all your codes/tokens to an external device such as a USB stick or PC/Mac. Remember to set up a password for this file and to update it after every change in your tokens list.