this is how i solved it..
rtfm about tuya-cli.... use
tuya-cli link --api-key PROVIDED-BY-TUYA --api-secret PROVIDED-BY-TUYA --schema YOUR-APP-NAME --ssid YOURWIFI --password YOURWIFIPASSWORD --region CLOSEST-TUYA-SERVER-TO-YOU

if succeed. you will get id(DevID),ip(netip), localkey(KEY) and some ...

- installed domoticz,
- installed the "Tuya SmartPlug Config" plugin. Got access to tuya application, did run
tuya-cli link --api-key CHANGE--api-secret CHANGE--schema CHANGE--ssid CHANGE--password CHANGE--region eu
and got responce from my device via terminal/api,
[ { id ...