I have the same problem I already contacted the support via email but after more then 24 hours still no solution.
Thank you.
You have subscribed to Elite Membership - Discount (Webnovel) on Google Play. You will be charged an introductory price of 12,49 € for 1 month. Starting 03-Mar-2019 you will be automatically charged 25,99 €/month unless you cancel. Find out more.
Order number: GPA.3376-6700-3380-96587
Order date: 03-Feb-2019 09:58:47 CET
Item Price
Elite Membership - Discount (Webnovel) (by Cloudary) 12,49 €
Monthly Subscription ‐ Next payment automatically charged on 3 Mar 2019
Total: 12,49 €
(Includes VAT of 1,99 €)