No, because the plugin have a color white background, while the template have a color brown, this means that the plugin have a different’s background from template wordpress.
In the previous version of plugin, this problem not existed, and with the update not working the checkbox (because this does not align to the right, with the text)
I think that, these problems have been caused only by update, and this update has caused the incompatibility of plugin “contact form” with my wordpress template.
The my theory is proved by my second site web, (this have installed “contact form 7”), and in this, the checkbox works well; of course is not possible do make a comparison with the first my site web, because in second site, the background is color white and the text is color black.
In conclusion, given that in second site the checkbox working well, I think that there is something of new version that go conflict with the my template, then I ask you instructions for change the background of plugin, for find a solutions for this problem, but for me this problem needs to be solved from the plugin and not from theme.
For you can see this problem, I have insert under the link of my two sites.
Site 1: (there is the problem) https://www.vincenzocorsaro.com / contacts
Site 2: https://www.iuirsweb.com / contacts
I want to say to you: Thanks for all !