2nd time buying. This is the only seller you should be buying from.

bought All Pack Crystals from them. it was very late at night and they still deliver anyway. seller accidentally sent crystals to HSR instead of Genshin but took complete accountability and responsibility for the mistake and resent crystals to Genshin. no extra charges were necessary, they unfortunately took a loss.
This only proves how they are very trust worthy, professional, and dedicated they are with their top up service business.

will absolutely purchase from them again!