The Customizr theme has disappeared me!

Yesterday I upgraded WordPress and today suddenly I found that the Customizr theme has disappeared me. If I’m looking to install it does appear as installed, but in my themes is gone.
Worst of all it was the theme I was using my blog and now appears completely different.
To some of you it has happened something?
Thank You.

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Ayer actualicé varias cosas en wordpress y de repente hoy me he encontrado que el tema Customizr me ha despaparecido. Si lo busco para instalarlo sí que aparece como instalado, pero en mis temas ya no está.
Lo peor de todo es que era el tema que estaba utilizando y ahora mi blog aparece completamente diferente.
A alguno de vosotros le ha ocurrido algo parecido?
Gracias