L'ho risolto modificando questa riga:
var credentials = MongoCredential.CreateMongoCRCredential("admin", "skMongo", "(my password)");
a questo:
var credentials = MongoCredential.CreateScramSha1Credential("admin", "skMongo", ("my password"));
L'ho risolto modificando questa riga:
var credentials = MongoCredential.CreateMongoCRCredential("admin", "skMongo", "(my password)");
a questo:
var credentials = MongoCredential.CreateScramSha1Credential("admin", "skMongo", ("my password"));