several problems

I have several problems with my site. The frontend works perfect, the problems are in the backend, does not erase the cache, not backup with Akeeba creates, not to upload images per extporer, only multimendia manager. Can you help?
Thank you!!

From your description I see that you have problems only with 3rd party extensions. Template don't affect to any back-end settings so probably this is your hosting issue or this extensions are caused problems. You should contact with extension providers because all this 3rd party tools are beyond our support.

Thanks!