In the S-Drive Configuration App, click edit on the bucket associated: check the bucket region:
It should be the same in this remote site:
in the url "us-east-1"
B) Check the Bucket Name:
In the S-Drive Configuration App:
Should be reflected here:
4) Send Email feature
In setup Deliverability → All Email
5) S-Drive connection
Go to Setup-->WorkFlow Actions-->Outbound Messages. You'll see 4 from our package. They all need an active System Admin user as the user to send as.
You'll get disconnected again in a few hours if it's not updated. I see you have a user called Admin Questel. You should probably use that one for all the outbound messages.