Try the following:
- Clear your cookies and cache
- Change browser
- Log in through a different device
If the problem still persists, It can be a problem on their side and only blockchain.info can solve it so you should contact their support at the following links:
They are currently under heavy load of inquiries so you should expect a longer waiting time. On the other hand if its urgent and you have to access your funds asap, you can import it in another wallet.
Electrum is the best choice for that IMO
*Please note that when importing, your funds will be accessible on both wallets which is why it's highly advisable to transfer them in a new wallet (with different seed/PK's) once the network has stabilized to avoid high fees.
If you have a specific wallet that you want to import to, Let me know.