Servers unreachable, cannot open downloaded application

Hi,

I played CreepTD about a year or two ago and stopped for a while. I want to play again, but when I go to play on my computer, the minute I try to log in it tells me that the servers are unreachable and my connection is aborted.

I tried downloading the program, but it said I could not open the application. I also tried making a new account, but nothing seems to work.

I have a Mac, with the latest version of Java and I am using Firefox or Safari to try the browser version.

Any suggestions?

Thanks.