"You need a commercial license" - I have a personal license, which should be fine.
Solved
"You are using the personal edition of NoSQLBooster for MongoDB and the "Connect to MongoDB Enterprise Edition" feature is disabled, to unlock this feature, you need a commercial license."
I don't see why I should have an enterprise license to make a basic auth connection.
mongodb://yyy:xxx@cluster0-zzz.azure.mongodb.net:27017,cluster0-zzz.azure.mongodb.net:27017,cluster0-zzz.azure.mongodb.net:27017/testdatabase?ssl=true&replicaSet=Cluster0-shard-0&authSource=admin
If I can't make a simple connection to the db it's not much of a use.
The same problem 
I also agree that it is unnecessary to restrict MongoDB Enterprise Connection.
We have worked a new build to enable MongoDB Enterprise Edition Connection. Please download and give a try.
Linux: https://nosqlbooster.com/s3/download/releasesv4/nosqlbooster4mongo-4.5.1.AppImage
Mac: https://nosqlbooster.com/s3/download/releasesv4/nosqlbooster4mongo-4.5.1.dmg
Windows: https://nosqlbooster.com/s3/download/releasesv4/nosqlbooster4mongo-4.5.1.exe
I also agree that it is unnecessary to restrict MongoDB Enterprise Connection.
We have worked a new build to enable MongoDB Enterprise Edition Connection. Please download and give a try.
Linux: https://nosqlbooster.com/s3/download/releasesv4/nosqlbooster4mongo-4.5.1.AppImage
Mac: https://nosqlbooster.com/s3/download/releasesv4/nosqlbooster4mongo-4.5.1.dmg
Windows: https://nosqlbooster.com/s3/download/releasesv4/nosqlbooster4mongo-4.5.1.exe
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