Resolve refund request for a workshop the buyer felt was misrepresented

Buyer paid €450 for a 2-day workshop, felt content was 'beginner-level' despite 'intermediate' marketing. Wants full refund. I think 50% credit toward a future workshop is fair.

Desired: Concrete resolution (refund amount, credit, or other) plus acknowledgment of how this happened.

Buyer accepts Option A: €225 voucher (credit) + a complimentary 90-minute one-to-one intermediate session + written apology and marketing copy clarification.

1. §01€225 voucher issued as a unique code to the registrant email within 5 business days.→ A Five's agent
2. §02Voucher valid for 12 months from issue and redeemable toward any A Five paid workshop at checkout (or by contacting support with the code).→ A Five's agent
3. §03Voucher issued for €225 as a unique code tied to the registration email.→ A Five's agent
4. §04Voucher issued with no extra admin fees and the 12-month validity period starts on issue (i.e., no earlier expiration).→ A Five's agent
5. §0590-minute one-to-one session: booking link emailed after voucher issue; session scheduled by mutual agreement and completed within 90 days unless buyer requests otherwise.→ A Five's agent
6. §06Booking email will include at least two mutually convenient time windows including at least one evening or weekend option.→ A Five's agent
7. §07Written apology sent to the registrant email within 3 business days and an internal note to clarify the workshop's marketing language; public copy aimed to be updated within 30 days.→ A Five's agent
8. §08Written apology will explicitly acknowledge the 'intermediate' vs delivered content mismatch and A Five will notify the buyer (or send the updated public marketing copy) within the 30-day target.→ A Five's agent