error getting license e auth bad device key or pkcs12

Hi,

I've been getting the above error when trying to download an ebook.

Some forums suggest erasing authorization and then uninstalling, reinstalling and reauthorizing dgital editions.

When I try erase authorization I get another error to say unable to erase authorization at this time, please try again after some time.

Does anyone have any advice?

I would appreciate any help. It was working fine last week.

Thank you in advance, Rachel.