Any idea of how to correct this?
Well, unfortunately I have no idea because your description of what’s wrong was “it doesn’t work anymore.” What exactly does that mean?
If you could be a little more descriptive, I might be able to point you in the right direction.
Sorry.
Actually, my users can not login anymore. It keeps saying wrong password.
I tested myself with a user that I created long time ago and it keeps saying wrong password while I’m 100% sure the password is right.
All my users encounter the same problem. Nobody can login anymore.
See point #3 under this section of the FAQs:
http://rocketgeek.com/plugins/wp-members/docs/faqs/#passwords
If you’re using anything that adds a captcha or other device to the wp-login.php form, you’ll need to either remove it or work around it.
This workaround addresses SI CAPTCHA, but regardless of what is used (Jetpack Protect, reCAPTCHA, or others), the workaround is generally the same:
http://rocketgeek.com/tips-and-tricks/workaround-for-wp-members-front-end-login-when-using-si-captcha-on-the-wp-login-form/