Is the website considered mixed and religiously forbidden due to the images of women in it, and is changing one's real age on the internet considered wrongful behavior?

The website administrator must remove objectionable content such as intermingling (of genders) and the posting of pictures of unveiled women. If he is unable to do so, it is not permissible for him to continue as administrator. Similarly, lying about one's age is not permissible, as there is no benefit that necessitates it. Instead of lying, one can simply refrain from disclosing their age.