Perhaps you need more storage capacity than the one provided by your plan.
You can increase the storage limit via:
openode increase-storage [Amount GB]
and if you need to decrease the storage:
openode decrease-storage [Amount GB]
Amount GB should be an integer, for example:
openode increase-storage 2
will add 2 GB of storage. A server restart is not required. The storage limit is increased as soon as the command is run.