I have sent a voucher to someone. After a week he asked me for the pin. I couldn't remember it, and changed it via the App and forwarded it to him. A few seconds later I checked App and voucher wasn't showing. Does this mean it was redeemed? I really would like you to add an option that shows it was redeemed and maybe where.
That's correct. A cash voucher that has been created and not yet redeemed will show in your app under manage vouchers. The voucher will only cease to show once it's been redeemed or delete by yourself.