Multicurrency, tracking order, photo review and product notification can not be

Hello,
Hello,
I had a serious trouble with my e-commerce site. It was not loading. After long struggle with my hosting, we could manage to bring the loading speed to normal, however, multicurrency plugin, photo review plugin, woocommerceimage0.png notification plugin and order tracking plugin are not working. Whenever I enable them, the website goes off and says critical error. I really need your support.