Tons of fake profiles willing to meet you, will ask you to have a "safety hookup ID".
A badge for online dating because they wish to feel safe.
They gonna tell you that it's totally free.
The Credit Card will provide your age and citizenship.
(a crap and a lie: CC never gives out such information)
Flirt.com and hookup.com are specialized in this kind of practice.
The girls will give you a link with an affiliate ID for your "verification".
Hope you know about affiliate, no need to discuss it here.
Once you clicked there
YOU WILL BE BILLED for a membership, which is around $50.
If someone is telling you that, just hang up.Don't answer back and don't lose your time.
Here are some screenshots to get you the idea how they approach you.
All of them are coming from flirt.com.
https://image.ibb.co/cHHDNz/scam.png
https://image.ibb.co/gw5Hze/scaM2.png
Beware toxic dating sites