Who has used the free CEUs to renew your licenses?I’m worried if it’s free it’s a scam.

Go through an accredited source.

Make sure they are from a reputable organization, such as the CDC for vaccine CEU's. I've used them for license renewal.

Nurse.com has free Ceu for nurses that I have used for years. No scam.

If through your work is best but as long as you get a certificate you should be good.