It may be that you are doing a repetitive activity which irritates or inflames the tendon.
Or increased your amount of activity alot recently?
You can fully recover which can take some time.
Have you rolled your foot?
Yes, you may have tightness in some areas from wearing skates.
Free Your Heel, Free Your Mind
Episode 350: Tack And Floss: Heel Cord Edition
Episode 319: Protect Those Heel Cords Man!
Episode 237: Heel Cord Love