Guests posting and security pictures pop ups

It's me again, I'm sorry to be a pain. I'm part of a Christmas event another forum is hosting. It's like a forum hop. One of the guests to my forum said everytime they post they are having to do this.



This is a screen shot of my forum with me as a guest.

I've gone to some of the other forums who are hosting their part of the parties and when I've posted, it just asked me to click if I wasn't a robot then posted the message. (I went as a guest)

Is there something I can do to stop this? It's really putting a damper on our whole party.

My forum is https://pimpinpspers.forumotion.com/forum
Forum type is phpBB2 (subsilver)

This is the area that is open to guests.
https://pimpinpspers.forumotion.com/c30-12-days-of-christmas

Exactly that popup should come up where ever you're on the Internet.  It is a way to stop spambots.

That is 100% normal it is a spam filter to stop bots from spamming the forum.

The person would be much better making an account then that will not happen again.

Alrighty. Thank you very much.
This is solved.