Plugging Couln't be Activated

Hi,

I bought the pro-version of Button X, downloaded the file and uploaded it to WordPress with no problem. But when I went to activate the problem it wouldn’t allow me, saying that it triggered a “fatal error.”

Fatal error: Cannot redeclare btnsx_activate() (previously declared in /home2/thedelvc/public_html/wp-content/plugins/buttons-x/buttons-x.php:39) in /home2/thedelvc/public_html/wp-content/plugins/btnsx/btnsx.php on line 43

I’m not entirely sure what it means. It mentions not being able to “redeclare.” If you could help shed any light on this issue or how to fix it I would really appreciated, I’m really excited to being working with the pro-version.

Thanks for your help in advance,
HH

https://www.ads-software.com/plugins/buttons-x/