How to cancel your subscription - general policy for most websites is to make this as difficult as possible, without making it actually impossible, in theory. I promise to make it easier. First step, simply email me when you want to cancel. Hopefully, give me a reason, although, of course, that isn't mandatory. I will have my programmer sort your cancellation request manually. Refund will be processed in 14 days because money goes out from PayPal in 24 hours, and using a credit card to pay is expensive.
L1 - No refunds for this heavily discounted service.
L2-L3 - For the annual payment, refund on a monthly basis calculated at the monthly rate. So, if you subscribe for a year to L2, but wish to cancel in the 4th month, you get back $39. Or, if you subscribe for a year to L3, but wish to cancel in the 4th month, you get back $200 under the discount offer, $450 after the discount offer is over. No refunds for monthly subscriptions, although you can cancel payments any time. Refunds processed within 14 days because of exchange rate and bank issues.
L4 - No refunds except in case of loss after following my entire advice, in which case you get full refund.