If you have not used iCloud before on your device and you want to start using it, refer to iOS iCloud Setup.
Launch the Settings app on your iPhone or iPad running iOS 8 or higher.
1) Turn On the option for iCloud Drive in iPhone/iPad Settings. Navigate to Settings > iCloud and Turn on iCloud Drive.
2) Turn On the option to allow iCloud for the App in Settings. It is very important that you have enable iCloud to the App in all the devices to start synching information.

3) Turn On the option for iCloud With the App. It is essential to turn on iCloud within the App in Setting > Advance to start sync and storage information on the iCloud.

iCloud Setup

If you have not used iCloud before on your device and you want to start using it, refer to iOS iCloud Setup.
Launch the Settings app on your iPhone or iPad running iOS 8 or higher. 1) Turn On the option for iCloud Drive in iPhone/iPad Settings. Navigate to Settings > iCloud and Turn on iCloud Drive. 2) Turn On the option to allow iCloud for the App in Settings. It is very important that you have enable iCloud to the App in all the devices to start synching information. 3) Turn On the option for iCloud With the App. It is essential to turn on iCloud within the App in Setting > Advance to start sync and storage information on the iCloud.
Navigate to Settings > iCloud and Turn on iCloud Drive

Turn On iCloud

Navigate to Settings > iCloud and Turn on iCloud Drive
It is very important that you have enable iCloud to the App in all the devices to start synching information.

Enable iCloud to the App

It is very important that you have enable iCloud to the App in all the devices to start synching information.
it is essential to turn on iCloud within the App in Setting > Advance to start sync and storage information on the iCloud.

Turn On iCloud within the App

it is essential to turn on iCloud within the App in Setting > Advance to start sync and storage information on the iCloud.

Advance Management

Within Manage Storage you can monitor the App storage usage. You can also review the files that are been store when you do something on the App.

Note that containers are shared between the apps. Invoice and Inventory app share the Invoice container, so data for inventory will be store under Invoice.

Monitor App Usage

Within Manage Storage you can monitor the App storage usage. You can also review the files that are been store when you do something on the App.
Note that containers are shared between the apps. Invoice and Inventory app share the Invoice container, so data for inventory will be store under Invoice.
If you run into problems check that you have enough space to store and sync information

Check Space

If you run into problems check that you have enough space to store and sync information
In case of problem with corrupted data you can delete files from those container one by one, this action is not recoverable and you will lose all the information that you delete.
iCloud may take a moment to sync data between devices and occasionally the iCloud service provided by Apple may be down.

Manage Storage

In case of problem with corrupted data you can delete files from those container one by one, this action is not recoverable and you will lose all the information that you delete. iCloud may take a moment to sync data between devices and occasionally the iCloud service provided by Apple may be down.