score:3
UKVI have advised you that they won't meet their service target for your visa application because they need more information. That's all.
They haven't indicated what information they need, nor how much longer things will take. They have not refused your application (nor have they granted it, yet)
The fact that your colleagues have been granted their visas has no bearing on your application.
Someone else may have received the same email, but their experence has no bearing on your application, neither in time elapsed, nor in outcome.
The only thing you can do is wait.