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In Mycelium we also support and advertise Keepkey. Looking forward to see this resolved.
That said, if Keepkey „just went broke“ your excitement is probably not warranted. If it all was a façade that starts falling apart now, then yes, we probably better worry.
Could you elaborate a bit more on the issues you had? In how far could Multibit help you? I pinged Doug and Darin, too, so hopefully we can get this fud sorted out soon.