If you want to renew the ME class then you will need training to bring you back up to safe standard then test.
As as you hold a current ICAO IR ME then regardless of the status of your EASA iRME you can go straight to test on that, but likely combine the ME class and IR would probably be a better option for you. (More time Training etc).
You can can renew anywhere in EASA - just the examiner needs to contact the Authority for permission prior to test.
HTH.
DD