If you can't log in to the forum, please, use the Old login form. If you can't enter the Control Panel of your website due to the recent uID issues, please see this thread. If you want a temporary solution to the profile login issue on your website, please see this post.
Wei-kun, please provide the domain name you are trying to connect or the uCoz address of the website. We've experienced technical issues with domain connection over the weekend, but it has been resolved already.
I'm not active on the forum anymore. Please contact other forum staff.