Get a Prusa Core One kit, or build a Voron.
Bambulab should be off the table for their bait and switch behaviour. AMS is not particularly impressive and very wasteful. Get a Bondtech INDX down the road if you want true multi material printing.
Also probably AGPL infringement, since the slicer is a fork of priser slicer which is AGPL, and you can't build the slicer from source, because if you could, then you could use the binary plugin for communicating with the printer in other slicers -- but you can't.
It's pretty blatant IMO.
But it's also a printer that just works.
Are you sure you aren't just running older firmware (my A1 mini is a recent acquisition)?