How do I make purchases with Crypto com pay?

Hello there, I'm curious about making purchases using Crypto.com Pay. Can you walk me through the process step-by-step? I'm particularly interested in understanding how I can LINK my Crypto.com account to online merchants and make seamless transactions. Also, I'd like to know if there are any specific requirements or limitations I should be aware of when using Crypto.com Pay for my purchases. Can you elaborate on the security measures in place to ensure the safety of my transactions and funds? Lastly, are there any fees associated with using Crypto.com Pay, and if so, how are they calculated? Thank you for your help!