Tenses

Hi there,
Once a guy told me that I cannot use different tenses in one sentence, I speak quite natually and fluently but the comment this guy made, made me quite cautious about writing. Could please tell me if the sentence below is ok? especially the "are" part.
Thanks.

Natasha

In 2007, Kazakhstan government announced that Casino halls are no longer permitted to operate except for the two areas – Kapchagai and Shchuchinsk.