Quite stressful. You should stop using online based wallets like Blockchain wallet and instead opt for wallets like Electrum where you have full control. If you manage to log into your account here is a procedure of how you can import your account to electrum

I saw some article from their support center. Maybe try reading through it: https://support.blockchain.com/hc/en-us/articles/360000937726-I-am-not-receiving-my-authorization-email