Why is this happening?

I have only used depop once to order a hello kitty gotochi but i tried to access the website on my desktop. It came up with this message on a blank white screen. Ive tried accesing depop on other accounts on this desktop but it says forbidden. Help?

I have only used depop once to order a hello kitty gotochi but i tried to access the website on my desktop. It came up with this message on a blank white screen. Ive tried accesing depop on other accounts on this desktop but it says forbidden. Help?