Wasabi Client currently does the following as it pertains to storage buckets with the Wasabi storage service:
1. To make it easier on users that are new to S3-style storage and the concept of storage buckets, Wasabi automatically creates two storage buckets in your Wasabi account when you first login with Wasabi Client (wasabi--cloud.... & wasabi-immutable-cloud....). The differences between those 2 buckets is explained in this article.
2. Wasabi Client does not currently allow you mount storage buckets other than the automatically-built buckets described in point #1. This means that if you other storage buckets you have created from the Wasabi Console or from another storage app, you can't access them from Wasabi Client.
If you need a client that allows you to access all of your buckets, please review the options described here.