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You see? Your lack of understanding how ecash works made you to lose funds and not Voltz. You are talking about Minibits app seed. That seed IT IS NOT LINKED to another mint that is not minibits. The seed is only for Minibits app.
In Minibits you have the option to backup the tokens, that RESIDE on your device and nowhere else. Voltz cannot recover your ecash tokens from Minibits app. If you erase those tokens, are gone.
The only thing Voltz can do is to dig up into your account and see the LN movements and do the math for the remaining balance and give you those sats.
Please understand that the sats are already on Voltz node, but you were playing around only with a bunch of IOUs ecash tokens.
Think about this: Voltz gave you some gift cards and you burn them. Now you complain to give you back the value of those burned gift cards. You are making them responsible for your own actions... that is not fair.
Sorry, but I have to disagree here. It is true, that the created Cashu tokens are stored on the Minibits wallet. But it is also true, that the cashu Protocol provides a function, where with the seed the wallet can restore all tokens of a specific mint. Actually I had 3 different mints on that Minibits wallet, Voltz, Minibits Mint and Coinos Mint. And the tokens for minibits and Coinos get both restored just with the seed after I reset my wallet. Just for Voltz not, because they disabled my tokens.