Since I have been using your plugin for at least 4 years I am familiar with it. I finally got it to send after three tries of hitting the I am not a robot and then a selection of pictures popped up and asked me to choose certain ones. That is how it finally recognized I was human. So if you don’t think that is a problem that is fine. Most users don’t pay attention and just think it doesn’t work.
You might want to test your plugin on the different devices.
