I just tested your site and the CAPTCHA is working correctly, however I believe I know why spam is getting through.
Are you using any caching or speed optimization plugins?
It looks like the CAPTCHA is not updating, it appears to be cached.
Normally this would not be much of an issue, except in your case, the answer is the first option, so bots are probably selecting the first option and bypassing the honeypots.
If you do not have any caching or speed optimization plugins in place, then I will have to look deeper as to why the random function is not working. If this is the case, please go to Tools -> Site Health -> Info and click the “Copy site into to clipboard” then paste that info here, that may help me figure out what is causing the issue.
If you do have a caching plugin then a temporary fix would be to clear your cache so that the correct option is either the second or third choice.
The free version of the plugin only has basic functionality whereas the Pro version was built with ajax so that the CAPTCHA would always be random even with a caching plugin. It also randomizes the choices after submission as well.
I might also look into updating the free version of the plugin so that the correct answer is never the first option, however I will have to research this to see if bots usually select the first option or if they select at random. It will also take me some time to get around to making the update as I unfortunately do not have the time to update it at the moment.