The Klever K5 Wallet is only available on Android here:
https://play.google.com/store/apps/details?id=finance.klever.bitcoin.wallet
Once opened click on Create Wallet
Read through the disclaimer and click I Agree
Note the seed phrase somewhere secure and offline
Press Continue then type out your seed phrase and press Continue again
On the home screen press Buy your NFT Domains
Read through the screens pressing Next to move
Enter your desired Domain name then press the magnifying glass. The free domain must be 8 characters+ consisting of at least 1 number
Click on the desired TLD, notice .wallet is free
Click on MATIC - Main Account
Enter your email address and click Confirm
You will then see the Transaction sent successfully
