✔️ Provide us your Riot ID, EX: ABC#XXX 
✔️ Select the value of RP you wish to purchase, complete the payment, and the RP will be added asap to your League of Legends account.

For other region players:
1. Use VPN to start up a new riot account in these regions(preferably Malaysia).
2. Login to LOL without using VPN, so your new account will be in the same server as your main account.
3. Then you can gift yourself skins using the new account.