SupportIf you have a problem playing the game, please take a look into the Help and FAQ page. Usually, other players already had a similar problem there is already a solution.
Or do you have a question or a problem related to the purchasing process of the premium account? Please take a look at the plimus customer support center or the shareit customer care center (there, you can even contact shareit directly there ('Who should I contact with questions about my order, payment, or delivery?'), depending on which service you used to order your license key.
Otherwise, please submit a support request now.