Hey there @pascal! :gigipixel: Thanks for reaching out - Could you clarify what you're looking for when you're asking about our SLA timeframes? Are you asking about how our uptime is calculated or are you asking about the response & resolution times defined in our SLA?
I believe the add-on is charged per account, but let me double check that and loop back with you ASAP.
In the meantime, here are some helpful docs that provide some more info on our support service and service level commitments: