I’m assuming I misunderstood how the plugin is supposed to work – my understanding now is that whilst you can have more than one service provided within a slot, you can only provide one of those services at any one time.
The way I got around it was to have a calendar for each slot (swimming lane in our case) and provide only one service (swim booking) within that slot. It does make it potentially more awkward for the end user having to check each slot for the time they would like, although it is possible to make it easier if you can provide a front-end for them to switch easily to check the other slots. That resolved my problem before we had too many bookings. All in all though this is an excellent plugin.
