Hi! Sorry to hear that but system of the words were not changed since the very first version, because it would pretty much break everyone’s existing wallets.
There’s a well-known standard for crypto-currencies on how to work with these mnemonic words, called BIP39 - https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki
Cardano uses this system too. It defines the standard dictionary of words, and the standard way on how to check the correctness of a phrase. There’s a precise mathematical way on how not all combinations of words are valid (checksum) - only around every 16th combination is considered valid.
This is what the “Invalid Recovery Phrase” error indicates. Wallet technically could not generate an invalid phrase for you. So if you receive this error, there’s only 1 possible reason for this, I’m afraid - you are entering an invalid phrase. And it might be either because you wrote it down incorrectly, or reading it from paper incorrectly. And I’m in no way accusing you of being uneducated or anything like this. I have mixed up phrases before too. There’s no point in being pissed off, because the only way to solve this problem is too calm down and use this standard dictionary to check and verify each word, and maybe to look up for similar words, how @rdlrt rightly suggested - https://github.com/bitcoin/bips/blob/master/bip-0039/english.txt
I very much hope you will be able to find the correct phrase!
btw, hacks are irrelevant to this, because this error message just indicates the mathematically wrong sequence of secret words. There’s no way for a phrase to be valid and then to become invalid due to a hack or anything like that.