Response from Eufy below - they were on the case pretty quickly it seems so well done to them.
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Thank you for reaching out.
We are reaching out to inform you of a recent issue that may have affected your eufy Security device’s interaction with the Alexa platform. Our team identified a backend service anomaly that caused a delay in device notifications.
We want you to know that this issue was promptly addressed and resolved on February 6th. We have taken steps to ensure that the reliability of our services is upheld and that such inconveniences are minimized in the future.
Should you have experienced any inconvenience due to this delay, we sincerely apologize and appreciate your understanding.
If you have any further questions or require additional assistance, please do not hesitate to contact us.