You could re-import the wallet by restored Private Key/Mnemonic/Keystore/WIF and reset the wallet password.
Let’s take the ETH wallet as an example:
Click the top-right button and go to the Switch Wallet page
1. Click the “+” button
2. Select “Import Wallet”
You could choose to import the wallet by Keystore, Private Key or Mnemonic. Here we choose “Import by Private Key”
3. Reset password
Enter the right private key, set wallet name and password, then click “Import Wallet” to complete the password reset.
Any question, join: https://t.me/mathwallet