I have a similar problem, but because some other things I can't clear cache but I can log in with my phone app and another browser.
If you find the issue first make sure that you have already verified the browser before tried to logging in. That is major issue you can find the blockchain wallet and coinbase. Then you have keep check the wallet setting with the app then only you will be able to use the application also with the blockchain android and iPhone applications.
After all you done only clearing cache can be checked. If this also checked from your side means you have to go with the support team of the blockchain wallet.