Use a much better wallet like Electrum and avoid Blockchain wallet. The issues with synching and
showing wrong wallet balances confuses newbies, and they end up
losing BitcoinsSince you already have the seed phrase or mnemonic phrase;
1. Download Electrum from the Official site (
https://electrum.org) and
verify the GPG signatures depending on your Operating System before installing it, just to be sure you installed the right wallet.
2. Once you have installed it, Open Electrum, Select
New and then enter your desired account name and click next to create.
3. Select
Standard wallet and among the options select "
I already have a seed"
4. Enter your
seed or mnemonic and under the
seed options button check
BIP39 and click on next.
5. I believe your script type on blockchain wallet was legacy as the default, so you select
Legacy (p2pkh) and the derivation Path stays as
m/44'/0'/0'6. Enter your desired wallet password, click next to create the wallet. You should be able to see your bitcoins and spend them. If are not able to see your bitcoins, check the addresses in the wallet to see if one of them was your default address in the blockchain wallet you used in the past
Please keep us updated if you are successful or not