Have the AmigaKit adapter and it works fine with an accelerator board - did need to switch the jumpers to disable the extra 4mb ram. Tell me I’m wrong anyone but the interface is just a bit of metal isn’t it? Your Amiga won’t notice it’s there unless there’s a card plugged into it so I would guess maybe you have a card or software installation problem. I use a SanDisk Ultra 4GB (30MB/S.
On question of hot swapping, I don’t know if it’s good or bad but I would assume if you have a policy not to do so at least you will never accidentally remove it while it is still writing data and possibly corrupting it?