In view of the fact that Metamask Support is not responding, and keeps us on the verge of despair. Searching in the networks I found this information https: // blockmit . com /guias /variadas /generar-semillas-bip39-con-dados/ I read and applied what he recommended (following the advice, offline) and I have been generating, more quickly, the accounts, this program generates the public address and even the private address, matches the accounts that I was creating in my wallet, I still do not find the public address I am looking for (with this system I have generated more than 60 thousand, and nothing). I will keep insisting. If you want to try your luck, let’s see if you can find a solution. It is simple to use… Generate a random mnemonic 12 or 24 words, just indicate the amount of words of your seed, in my case it is 12, BIP39 Mnemonic : place the seed phrase (12 words), Coin : select the currency, in our case ETH, and wait for the wallet to be generated, by default there are 20, but you can request to generate more, I have been generating from 10 thousand to 10 thousand. The page will show you a list of 4 columns, including the public address and the private address (which is what we need to import the account). IMPORTANT : you must use this page offline, and if possible on a computer that is not yours, it is recommended. As I told you, I still can’t find my lost public address, the others appear, but I keep trying. Do it at your own risk and discretion, if you manage to get what you are looking for, I recommend to withdraw your currency and leave that account. This is the Link https: // bip39 . net
Good Luck