Starting with Resilio Connect version 2.9.1, Resilio Connect supports transfer of files from and to an object storage. This is performed by an Agent installed either on a local computer or in a cloud virtual machine. In either case, it's advisable to make some tuning to such an Agent though a special profile that was specially created for such purposes.
The Object storage profile is inherited from Default Agent profile with some settings changed there (for settings details see here). It's not advisable to use this Profile for the Agents that are not going to sync files in an Object storage as it is not optimized for non-cloud storages.
To assign the profile to the Agent, create a group, add the Agent there and assign the profile.
It's also possible to create your own non-default profile, give it a recognizable name and apply the Object Storage preset. Note, the selected preset is not visibly marked in UI, but new non-default settings appear in the Profile After that apply it to the group with the agent.
In the Agent details check that it now has the proper profile applied.