How might one interact with a smart contract from (gnosis) safe if their wallet is hypothetically down or unavailable?

The question more often asked and answered is "what happens to my crypto if (ledger/trezor) goes down," and my question is what's the multisig equivalent of that? The process to make a multisig with safe seems straight forward but I would appreciate any extra insights into the what-if protocols to follow in the event of something happening to the safe wallet if for whatever reason the website is down, the wallet app/ui broke, or their company stops updating or whatever.

Thanks!

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