Fixed for us in the public release: watchOS 27.0 (24R364) with iOS 27.0 (24A437).

@DTS Engineer Can you confirm whether FB20915258 will be added to the backlog for a potential fix in a future update? Thank you.

Thanks for the response. I agree this seems like a system-side bug and have filed a feedback report: FB16989845. Additionally, due to this and other related issues, complication previews on iOS often don’t function reliably. Overall, WidgetKit for complications remains unstable, especially when used with .watchface syncing and Intent-based configurations.

Specifically this

@simonfromhelix Thanks for the reply. You haven't even been close to solving this? Maybe there's no solution at the moment?

Most of the problem is that you try to add cards and failed for 3 times in 24h. {error: {,…}, requestID: "43EC572373912A2DE4463D15002DD90F_1651755236199", status: "error"} error: {,…} errorCode: "2047" errorMsg: "You're allowed three credit or debit card change attempts in 24 hours. You must wait 24 hours before attempting to register a new card." internalErrorCode: "TORO-API-CC-CC008" requestID: "43EC572373912A2DE4463D15002DD90F_1651755236199" status: "error"