How do I enable and select Ethereum testnets?

Burner supports Ethereum Sepolia and Base Sepolia testnets. By default, testnets are disabled on Burner. To enable and use them, follow these steps:

1. Open SETTINGS and go to CHAIN SETTINGS.
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2. In CHAIN SETTINGS, check the box for ENABLE TESTNETS. Click SAVE CHANGES to confirm.
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3. Once enabled, testnets will appear in the network dropdown menu. You can select your desired testnet, such as Base Sepolia.
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