Receiving reimbursements for benefits

• Where can I see my past reimbursements?
• How do I make sure I’m being reimbursed for eligible non-taxable purchases before my taxable purchases?
• When will I receive my reimbursement?
• What purchases are "non-taxable" and what does that mean?
• What purchases are "taxable" and what does that mean?
• What does the purple message about my utilization in the middle of the page mean?