Cymbidium devonianum growing has stopped!

[Burgos]

Hi everybody!!

I have a Cym. devonianum since autumn, it stood the winter temperatures (-2º C in winter) and started growing in spring. However, the 2 new shoots that were growing suddenly stopped doing so and I can not come to the reason why this happened. The plant has 5 bulbs and it does not look like having any kind of disease nor parasites. I even had a look at its roots and they were perfectly ok, growing and healthy.

My culture is 25-30ºC (highest temp. during the day), 8-12ºC (at night) and some sunlight at morning and afternoon.

Can anybody help me to make it grow again?

Thanks.