No longer works after update to 3.01

I have this plugin on two sites using the same theme- on one I upgraded to version 3.01, on the other I’m running 2.0. The site running 2.0 works, the site running 3.01 doesn’t. The CAPTCHA just doesn’t show up on that one. Is there somewhere I can download version 2.0 so I can downgrade the version on the site that doesn’t work?

https://www.ads-software.com/plugins/google-no-captcha-recaptcha/