charged twice for the app

i had already paid for this app but today it said i'll have to purchase again and if i have already purchased it even then select purchase in app and i wont be charged. i did that and i was charged $4.49 rven when i had already purchased this app in the past

KLWP is distributed both as "in app" purchase and as an external pro key, you likely bought the external pro key, the message you read was for users who previously bouth "in app" and the purchase was not recognize. You need to download again the pro key you purchased from the store HERE and email me at [email protected] so i can refund your purchase.