It is not quite clear what your issue is. If remote access/cloud access is not working properly the first troubleshooting step is to access the My Cloud Dashboard > Settings and disable Remote Access/Cloud Access. Wait five to ten minutes. Then re-enable Remote Access/Cloud Access and then test if remote access is available.
If you are worried about your device being stolen and loosing access to your files. That is a different issue. An NAS is not a replacement for an online Cloud Storage service. If one’s NAS is stolen then one’s files are gone unless the thief connects the NAS to another network at that NAS can successfully get online without being modified by the thief. Theft of an NAS is one reason why it’s wise to have some sort of backup (preferably offsite) of the My Cloud data.
One possible method to backup one’s My Cloud to a Cloud Storage Service or to another remote location is to use GoodSync. However installing and setting up GoodSync may require SSH access to the My Cloud and additional knowledge or skill to get that app working properly.
GoodSync for Western Digital MyCloud NAS
