Miltioniopsis - dead flower bud:( dying leaves

[PleaseBloom]

Hi everyone. I got this plant 'Hajime Ono' a few moths ago and have been struggling to keep him alive. It came infested with sails. I repotted and got rid of those. I think I overwatered because quite a few leaves turned yellow and came off. I did pull from pot and put just bark in the lower half of the pots to help dry out faster and no more dead leaves Then I got a spike! (was probably there when purchasd and was so small i didnt notice) Waited forever for flowers and now one of the buds died...WHY??? The only thing i can think of is maybe i got miracle gro orchid food mist on it? I do mist every week or two in addition to 20-20-20 fertilizer very watered down every few weeks. Any help with this plants care would be greatly appreciated. Is it planted at an ok depth?

Also this tempermental thing and its suite mate 'Lillian Nakamoto' are poted in a bark, moss and pearlite mix and have their own humidifier. Lillian does nothing...doesnt grow but doesnt have dying leaves. She is growing roots like crazy. Haijime is growing new shoots but I dont think roots really. The picture of both is a couple weeks after purchase.