Glad you were able to solve this.
SODE expects the atc_model entry under [General] to be the offical ICAO aircraft type designator, a 4-letter code: See here for the list, which should be followed by the aircraft designers as well ideally, since this is what the FS SDK originally wanted:
https://www.icao.int/publications/DOC8643/Pages/Search.aspx
But thanks for the info, I can also add those “incorrect” atc_model IDs to the internal database within SODE (CRJ700, CRJ900 and CRJ1000).