Amazon Echo Control Problem: getSmartHomeDevices fails: GET url 'https://alexa.amazon.de/api/phoenix' failed: Too Many Requests

Add-ons Bindings
13

Equipment: Pi5/8GB(PiOS Lite 64-bit(bookworm)/SSD 120GB - OH4.2.1 openhabian

Hi all,
I have the same problem observed as described in the posts before.

Status:
OFFLINE
COMMUNICATION_ERROR
https://alexa.amazon.de/api/phoenix failed with code 429: Too Many Requests

As others, I can see that there are no channels for my “AirQuality-Monitor” and all “Guard-Things”.

I’m wondering why the version of the AddOn is

openhab> bundle:list | grep -i SmartHome/J
314 x Active x  80 x 4.2.0                 x SmartHome/J Add-ons :: Bundles :: Amazon Echo Control Binding
315 x Active x  80 x 4.2.0                 x SmartHome/J Add-ons :: Bundles :: Common Components
openhab>

and not “4.2.1” ???
There are several threads here:
Amazon Echo SmartJ Binding issue with Account Login
or
Amazon Echo SmartJ Binding issue with Amazon Thermostat
writing about the same problem

My Third-Party-Add-Ons-Settings are

https://download.smarthomej.org/addons.json|https://download.smarthomej.org/addons-beta.json

as described by @J-N-K .
But I can not find a version “4.2.1”, neither “normal” nor “beta” in the AddOn-Store.

Anyone any idea ???