Adding Image on the home page

I restored the defaults and added the img and iframe like you showed me. but on the browser side the HTML doesn’t show the added img and iframe tags inspect

Allowed HTML Elements
p,br,strong,em,span,div,ul,ol,li,a,h1,h2,h3,h4,h5,h6,address,pre,table,tr,td,blockquote,thead,tfoot,tbody,th,dl,dt,dd,q,small,strike,sup,sub,b,i,big,small,tt,img,iframe

Allowed HTML Attributes
*.style,*.class,a.href,a.title,a.target,img.src,iframe.src,iframe.width,iframe.height,iframe.allow,iframe.allowfullscreen,iframe.frameborder