Just done a Dacia Duster 2018 with obdstar x300 dp plus tablet, very fast in 7 minutes.
Model: Dacia Duster 2018
Key: transponder key with 4A chip (original key and a new key)
Purpose: add a spare key
Device to use: OBDSTAR X300 DP PLUS
Connect X300 DP plus with vehicle
Select Immobilizer->DACIA->DACIA V30.73->Program Keys->Duster->2014-2018->Program keys
If there is a new key, learn the new key first
Follow x300dp plus prompt to program next key.
Test new keys.