Hi Suomi Méndez Guirao
We are sorry for the trouble. You can save the same signature on multiple devices.
With the all-new signature sync feature, you can quickly take a picture of your signature using the Adobe Acrobat Reader mobile app and use it when signing across desktop, web, and mobile devices.
When you save your signature, it’s automatically uploaded to Adobe Document Cloud in the background and synced to all your devices or apps. When you open a document for signing, the signature is downloaded in real time if it's not available locally and made available for use.
For more information about how it works, please refer to the steps provided in the help article (https://helpx.adobe.com/acrobat/using/capture-and-sync-your-signature.html)
Regards
Amal