Your elo must be at least 800 Axie

How Do You Earn SLP? The upcoming changes for Season 20 will only allow players to earn SLP by playing in Arena Mode. The SLP rewards for Daily Quest and Adventure Mode has been reduced to 0 for economic balancing .1 Mar 2022

Remember that you can still earn SLPs in Adventure mode even if you play without Energy , so keep playing in Arena mode and only switch back to Adventure mode if you no longer have Energy. This is if you no longer need to level up your Axies any further.

To earn SLP in the Arena you will need to spend Energy. If you have no Energy, then you won’t be able to earn SLP. Your only way to earn SLP without Energy is by playing Adventure mode .