Log out All Users – users cant login anymore.

I used:

SG Security > Post-hack Actions > Log Out All Users

now I am getting calls from many customers claiming they tried to login to my website and after entering their credentials and clicking login, the page refreshes and simply reloads them to the same login page to enter their credentials.

What can I do to fix this?

I told some of them to clear there browser cache, but that didn’t do anything.