Do you have your seed phrase?
You could install nostr:nprofile1qqsvdc3s5f0260zfwqfkx7lnw77wmqw8ekmqmzq6v0kmzw9s32ngpqcfwuxkg and enter it there to see if you still have acces to your sats!
No the reason I didn't back it up was privacy.
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