I am not sure since which update, but for awhile now whenever I have tried to click "Play Now" on a webpage it doesn't even run BYOND. I look in my pager, I do not have the "BYOND Central is not accessible." message, just BYOND will not open the link. No blue window pops open attempting to connect. I can't even join games through the pager, aside from copying the "Play Now" link, and pasting it into a bookmark on the pager. I have Windows 7, and have BYOND running with administrator permissions, but that hasn't seemed to have helped at all.
And, sorry if this has already been posted, I didn't see any posts with the same problem as me.