Creator's Access Token keep expiring

I am trying to implement patreon api with my application (nodeJS), but i cannot find a way to do that since the Creator’s Access Token keep expiring.

What i am trying to do is understand who paid who did not and show them only what they pay.

How do you guys do that? I am really stuck right now…

Creator’s access token must be refreshed using the refresh token before it expires. Does the access token expire before its normal expiry?