Onyx Boox Poke5P User Manual page 23

Account Management
You can bind and unbind the
Cloud Storage accounts under
Settings/Accounts (Other
Accounts)
If you unbind a Cloud Storage
account, downloaded books will
no longer be available in the
Library. However, you can continue to use them after
rebinding the same account.
Bind WebDAV
Regarding the binding of
WebDAV accounts, please refer
to the binding process
introduction on the websites of
each Cloud Storage. Different