1.0.20

[1.0.20] - 2026-07-03

Behavior changes for integrators

• linkAccountAsync() now throws when linking fails or is declined (previously it never threw). Wrap the call in try/catch and handle the failure — e.g. keep showing your "link account" prompt.
• prepare() can now throw the new KoardMerchantSDKError.readerTokenInvalid. Handle it in your catch; a retry typically recovers.
• Changing the API key resets the session — after reconfiguring the SDK with a different key, log in again before making requests.

Fixed

• Reconfiguring the SDK with a different API key now starts a fresh session instead of reusing the previous one.
• The card reader no longer briefly shows "ready" after logout, or when switching merchant or location.
• An unlinked device no longer flashes "preparing" before reporting that the account isn't linked.
• Account-linking failures are now reported to the caller instead of being silently ignored.

Added

• KoardMerchantSDKError.readerTokenInvalid — reported when the reader token is rejected (for example, a token used against the wrong environment).

Changed

• Card-reader preparation is faster.