This is extremely common with cheaply made knock-off browser MMOs. They advertise themselves by taking bits of screenshots from more well made games and mashing them together in the hope that their target audience won't recognise the stuff they've stolen.
Chances are the class selection and character image and the background isn't theirs either and it's been stolen from another game. And the actual game looks like something a student made in 2 hours in 1995.
Edit: There should be an option to report them for this if you click the 3 dots in the top right corner.
Chances are the class selection and character image and the background isn't theirs either and it's been stolen from another game. And the actual game looks like something a student made in 2 hours in 1995.