Wallet Drops a Network: How to Rescue Your Coins Before the Deadline

Your wallet has stopped showing a coin, and the app has put a date on the screen. The good news first: your balance is not gone. It sits on the blockchain, and the blockchain keeps running. What you lose is the convenient way in through that one app, and that can be replaced as long as you still have your recovery phrase. The next case falls on September 24, 2026: Phantom is ending support for the Sui network. It is the fifth shutdown of this kind in four weeks. This article explains what actually happens at a technical level, which two routes you have before any such deadline, where the move most often goes wrong in practice, and what German tax law has to say about it. What happens to your coins when a wallet drops a network? Technically, nothing at all happens to your balance. A self-custody wallet stores no coins. What it holds are the private keys you use to sign transactions on a blockchain, and its interface shows you what the chain assigns to your address. When a provider drops a network, it switches off the display and the signing function for that network. The chain itself, your address and your holdings stay exactly as they were. Phantom puts it plainly on its own help page for the Sui case: "Your assets are not lost. They remain on the Sui blockchain and can be accessed using a compatible wallet with the same credentials." In practice, plenty still changes for you. After the deadline you can no longer send, swap or work with applications on that chain from inside the old app. Anyone who does nothing until then is not facing a loss but a chore: setting up access again, with a phrase they may not have touched in months. Three things decide how unpleasant that will be: whether your recovery phrase is complete and legible, whether you know what kind of assets you hold on the affected chain, and whether you act before the deadline or after it. Self-custody explained: your wallet is a keyring, not a vault Self-custody means the private keys to your crypto assets sit with you alone and no provider holds them on your behalf. The recovery phrase, usually twelve or twenty-four words, is the human-readable form of the seed from which all your private keys are calculated. The address is the public half of that key pair, the identifier under which your holdings are recorded on the chain. From that structure follows the sentence this whole article rests on: the app is replaceable, the phrase is not.