Al actualizar DL2100 a OS5 me quedo sin copias internas ni USB

There is a specific subforum for the My Cloud DL series running OS5.

OS5 My Cloud DL Series
https://community.wd.com/c/os5/my-cloud-dl-series-os5/259

If you are not seeing the backup apps in the My Cloud Dashboard “App Store” the following discussion in the DL Series subforum may be relevant. In particular the second post in that discussion.