Yes, many people (maybe everyone) was recently inconvenienced by the new wallet login requirement.

Are you trying to claim your rewards or send your funds from the wallet?

What I did that worked (thought I would never need to), was login using my Master Password. Then it will display all of your various private keys which can be used to login to steemit, steemwallet, and various other steem apps. Copy all of these keys if you haven't done so already. Log out. Log in using the lowest level private key the steemwallet requests, and it should work again.

Personally, I started using steampeak instead of steemit ever since these changes started this month. It has a simpler wallet access, and cleaner pages to view posts easier. No ads. Works well on a mobile phone too.