Insert image and set featured image not longer working

Hello, please i need help with my blog, i recently renewed my hosting right but now am unable to insert image into post and am not also able to set featured image,when i try to change the post ‘visual’ format into ‘text’ it doesn’t work also. I need help on this please. my blog is http://www.fixmeblog.com
I’ll be waiting for your responses. thanks.