Yes, this is normal.
I have even seen non-Saas competitors sign up under false pretense, names, new emails- and get private demos, special trials, and so on.
Here, their honesty is a positive point.
If I were you, I would even reach out to them for direct feedback. They are paying customers, and you are the provider, and you are within your rights to reach out to them.
It will be a show of good sportsmanship.