I purchased 1 year's upgrades on 15 June 2021 (2 days ago). When applying the licence I noticed that the expiry date is 2021/06/15. It should be 2022/06/15.
The date is correct. You purchased a one-time upgrade, not a one year subscription, and paid only $55.
If you selected that option and paid the correct (higher) price, you would have been. If you like we can reissue the license if you pay the price difference.