GarageBand crashed when updating, now App Store shows "$4.99" instead of "OPEN"

Hi all,

So I updated my GarageBand last time, but for some reason it crashed and my MacBook had to restart...

Then I tried to backup and restore the system and now when I check GarageBand it says 10.0.3, seems like it's the newest version. But, when I browse in App Store, I found that GarageBand had the button with "$4.99" instead of other apps like Keynotes or Numbers which says "OPEN" on the button. Does that mean I won't be able to get any new GarageBand updates anymore? Do I need to purchase it again at $4.99??

Please help! Thank you very much!

Weisi