thin roots and has not rebloomed

[jennanotar]

My orchid's roots are shriveled greenish grey and there are only 2 leaves. The orchid mulch does not cover the top of the roots because when I had the soil cover to the top of the pot I thought it was suffocating the plant, but maybe I was using the wrong mulch.

I've had this orchid since 2012 approx and it has never bloomed after it first went dormant, it just stays in this terrible state of 2 leaves and thin roots. Please help me revive it? (pics attached)

Thank you!!!