ADA gone bye bye

I have tried to restore my Yoroi wallet using my 15 recovery words but only open an empty wallet. The Checksum is different and doesn’t match with any addresses. Does this mean I have recorded an incorrect recovery phrase and all is lost?

I have the same issue but couldn’t find any solution so far.Just contacted the support

Do you still have this issue? Are you using same recovery phrase from Byron in Shelley? If yes, then it won’t work, you need to create a new Shelley wallet and transfer your funds from your Byron wallet to Shelley.