YouTube is the largest video sharing interface in the internet which allows to free-access to many of the content online. 

Youtube premium is a paid subscription where user gets several benefits which includes the Ad-free videos, Background play, Offline playback, Youtube Music Premium and Youtube Orginals.

Sometimes, the premium does not get activated by itself due to many online reasons, how can we get such situations resolved? A user opts for a Premium account after a payment of 11.99 dollars per month which is a standard subscription and a family plan of 17.99 dollars per month. 

To check the subscription, click on the profile photo and tap on paid memberships, there you can see your payments and membership preferences. If the user after purchase is not able to enjoy the features of premium there is a possibility that the charge is still being processed or there are chances that it is been declined by the server.

Generally, it takes 3 days to process the subscription, if declined the user will receive an email from youtube stating that the transaction is declined. You can always cancel the transaction and try attempting again to get your premium subscription. If you allow the system to retry, the subscription will get activated on its own. YouTube Premium Not Activated After Payment

Please note for a successful transaction you need to ensure that the card information is up to date, the requested information is updated, enough funds on the cards and any delays checks first with the bank or issuer and last will be to try through a different payment method.