Access denied when connecting to mongosqld with MySQL

I'm trying to connect to my MongoDB using MySQL through mongosqld. I have mongosqld running with a config file that looks like security: enabled: true mongodb: net: uri: test-db auth: username: usertest password: pass source: admin schema: path: schema.drdl I have it hosted on a [mongo ODBC manager](https://github.com/mongodb/mongo-odbc-driver/releases/) with SERVER=127.0.0.1, PORT=3071, DATABASE=test_db, UID=usertest?source=admin, PWD=pass. I am able to connect to and query this MongoDB through Excel using [Mongo's tutorial for that](https://docs.mongodb.com/bi-connector/current/connect/excel/) , but I am not able to do the same with MySQL using [Mongo's tutorial](https://docs.mongodb.com/bi-connector/current/connect/mysql/) . When I try to connect from terminal with mysql 'user=usertest?source=admin' --default-auth=mongosql_auth -p I get ERROR 1045 (28000): Access denied for user 'usertest' and handshake error: unable to saslStart conversation 0: Authentication failed.` from the mongosqld side. I am doing this on macOS. What could be causing this problem only for trying to connect from MySQL?