Sending Client Issue not starting

I used to play on PMU a lot over the last few years and had the urge to get back into it so after I tried using my old client and finding out that it was outdated I downloaded a new client, and made a new account. After doing this I tried to login and I got stuck at the sending login info message for about fifteen minutes before I decided to start looking for solutions. Is it possible that the main site has changed? Is this still the site?

Thank you for taking the time to read about my issue and any possible help.