In short
Premium access is a one-time digital purchase, not a recurring subscription.
If the access link does not arrive, the email is wrong, a duplicate payment appears or a technical issue blocks access, write to destek@parani-koru.com with the email used for payment.
The priority is to restore access. Refund requests are then reviewed according to Lemon Squeezy order data, access status and the rules applicable to digital content.