Bluewallet is not having testnet. If it is mainnet, you can use Bluewallet for the recovery.
Does BlueWallet directly accept an Electrum phrase? Because that wouldn't count otherwise

but it's good to know anyway.
- Obviously, you are not allowed to use Electrum for this, or other software that directly takes Electrum seeds (as far as I know though, there are none).
Though you've proven me wrong on the "other software" part.