Tuya Binding: Unable to Authenticate

[rdiem]

I installed the Binding in openhab 3.2 and created a project thing. It stays oflline and shows COMMUNICATION_ERROR

The code of the thing is: UID: tuya:project:4909c45920 label: Tuya Cloud Project thingTypeUID: tuya:project configuration: accessId: MY_ACCESS_ID schema: smartLife password: MY_APP_PASSWORD dataCenter: https://openapi-weaz.tuyaeu.com countryCode: 49 accessSecret: MY_ACCESS_SECRET username: my.appusername@googlemail.com

The TRACE log shows:

22:40:13.524 [TRACE] [nding.tuya.internal.cloud.TuyaOpenAPI] - Sending to 'https://openapi-weaz.tuyaeu.com/v1.0/iot-01/associated-users/actions/authorized-login': Method = {POST}, Headers = {Accept-Encoding: gzip, User-Agent: Jetty/9.4.43.v20210629, sign_method: HMAC-SHA256, access_token: , sign: THESIGN, client_id: MY_ACCESS_ID, t: 1641159613523, Signature-Headers: client_id, Content-Type: application/json}, Content = {{"username":"my.appusername@googlemail.com","password":"ENCODED_PASSWORD","country_code":49,"schema":"smartLife"}}

22:40:13.621 [TRACE] [ya.internal.cloud.TuyaContentListener] - Received from 'https://openapi-weaz.tuyaeu.com/v1.0/iot-01/associated-users/actions/authorized-login': Code = {200}, Headers = {Content-Type: application/json;charset=UTF-8, Content-Length: 89, Connection: keep-alive, Date: Sun, 02 Jan 2022 21:40:13 GMT, Access-Control-Allow-Credentials: true, Access-Control-Allow-Headers: , Access-Control-Allow-Headers: access_token,Content-Type, Access-Control-Allow-Methods: POST, Access-Control-Allow-Methods: OPTIONS, Access-Control-Allow-Methods: GET, Access-Control-Allow-Methods: DELETE, Access-Control-Allow-Methods: PUT, Access-Control-Allow-Origin: https://iot.tuya.com, Gateway-Info: highway, Strict-Transport-Security: max-age=31536000;includeSubDomains;preload}, Content = {{"code":1109,"msg":"param is illegal ,please check it","success":false,"t":1641159613600}}

Found this: https://support.tuya.com/en/help/_detail/K9g77zprbu5u6
Please check if the url parameter grant_type=1 is missing

[J-N-K]

Are you sure you selected the correct datacenter? The standard for Germany is Central Europe. And which App are you using? The blue or the orange one?

[rdiem]

You're right. It was the wrong datacenter. I use the smartlife app - so the blue one. When linking the Link Tuya App Account with the wrong datacenter there are 0 devices in table shown. So thats a good indicator if choosing the correct datacenter.

@J-N-K Thanks for your hint! Now it is working.

[J-N-K]

Good point. I'll add that to the docs. Thanks.