Cannot activate my Premium subscirption

Good afternoon,
on the 14th of January I paid 119 USD in order to purchase Seeking Alpha Premium version offer but I couldn't manage to get it activated on my laptop/mobile device.
Please find here a picture of the email you sent me as payment confirmation.

Can you please check and help to get the Premium version working on my devices as soon as possible.
Please let me know if you need any further information.