I got ‘My Testimonial’ plugin. Thanks. I don’t see any problem with access to it at my test installation. It’s a capabilities set for WP built-in ‘post’ by default or capabilities set for ‘imtst_testimonials’ custom post type in case you turned ON URE Pro’s option ‘force custom post types to use own capabilities’.
I tried to look on the current settings at your site, but a user you provided to me does not have admin privileges currently.
I will can to say more on WPML too if/when you refresh my access to your site.