How to buy Hemule on Coinbase Wallet?

Can you please explain the process of purchasing Hemule on Coinbase Wallet in a step-by-step manner? Are there any prerequisites or additional requirements that I need to fulfill before making the purchase? Also, is there any specific fee associated with buying Hemule on this platform, and if so, how can I calculate it? Additionally, is there a limit to the amount of Hemule I can purchase, and what are the security measures in place to protect my investment?