All clones are device-locked by default. This means if you create a clone on one device, it cannot be used on another device. This is to prevent distribution and abuse of clones. This also happens when using the premium version of App Cloner.
The simplest way to get the clone working on another device is to install App Cloner on the other device itself and create a new clone locally. You can always export and import the clone settings used for a particular app.
However, if you want to create a clone for a specific target device, e.g. a friend or family member, then please use the Device lock option, which you can find under Launching options, pasting the correct target device identifier into the dialog. The device identifier is shown in a dialog when trying to open the clone on another device. On smaller devices you may need to scroll down inside the dialog to see the device identifier.
On Android 8.0 or higher do not use the Device ID shown under App Cloner Settings > Device info. Starting with Android 8.0 each app gets its own device identifier, so to find the correct device identifier you must first launch the clone without the Device lock option enabled.
You can also use the Device lock option to paste multiple, comma-separated identifiers, which allows a single clone to run on multiple devices.