Focused Inbox in Outlook on the Web

I don't think focused Inbox is GA.  There has been a discussion going on here waiting for its arrival.  Originally the rollout to FR users should have been completed by around next week.  With the rollout to standard users completed by early to mid-Jan 2017. 

You may have https://support.office.com/en-gb/article/Focused-Inbox-for-Outlook-f445ad7f-02f4-4294-a82e-71d8964e3978 already but for Q1:

"After switching, you'll no longer receive less important email in the Clutter folder. Instead, email will be split between the Focused and Other tabs in your inbox. The same algorithm that moved items to the Clutter folder now powers Focused Inbox, meaning that any emails that were set to move to Clutter will now be moved to Other. Any messages already in your Clutter folder will remain there until you decide to delete or move them."

Also from TonyRedmond https://www.petri.com/focused-inbox-office-365: 

"Items that are in the Clutter folder remain there until you remove them. After you begin using the Focused Inbox, the Clutter folder loses its status as a system folder, which means that you can delete all items from the folder and then remove it. In fact, if the Clutter folder is empty when a mailbox switches to the Focused Inbox, the folder is removed automatically."

For Q2, that does sound like transition or partial rollout issue.