Error saying addon is out of date

I downloaded the Wotlk addon from curse forge, and I got this message that’s posted below then I removed it and got the one directly from the site and I made sure it was the 11th version but when I went in-game and clicked my string to copy and I go on the optimize site here I get a message that says this, Error
It looks like you are using an old version of Mr. Robot’s addon. Please get the latest version and try again.

Most likely you were trying to optimize on the retail/shadowlands version of the site rather than the WotLK version of the site.