Can a website know my Laptop MAC address?

Dear all.
Can a website know my Laptop MAC address? I ask because after signing up with ********, and trying to "Friend" five known friends, ******** immediately blocked me from a new account after about 15 minutes normal usage, stating, suspicious activity. I could not believe it so I used VPN to setup a new ******** account but ******** were aware of this trick (justified trick as this was my account setup for normal usage (Not criminal)) so I bought a new SIM card to setup a new ******** account and still ******** were ahead of me, linking me to the same locked out account. Any ideas of how ******** were aware it was always me trying to access my locked out ******** account or trying to setup a new ******** account from the same laptop?
Many thanks.
Olive.
 
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The website CAN see your IP address -- not the MAC address. To verify that, go to a hotspot and connect there.
 
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