The register on my website just kept request password.
No matter what password I enter, it just ask me to enter a password.
Thank you for using wpForo and for contacting us.
Yes, I see the issue. Now we're going to check the issue. I'll update the topic asap.
It seems, there is some additional plugin that caused this issue. Please deactivate the other plugins and check again. If it works, enable the plugins one by one and check after each activation.
thx so much for your help. A login plugin caused the problem. After I disactive it, problem been solved.
But there is another problem about loing, the reCaptcha is always failed on every page.