I paid for a subscription and it doesn't work
Your subscription will only apply to the account that you used to pay for it. Make sure that you are logged in to the same account that you bought a subscription using. To see what account you are using in the app, tap in the upper-left corner of the screen and then tap your profile photo. If you don't remember your username or password to your account, use the recommendations in the I forgot my username or password section.
If you are using the correct account but your subscription isn't working, write to customer support. Attach your subscription payment confirmation and a screenshot of your Profile. We will check to make sure that the service has not been provided and restore your subscription for the paid period.