Group chat link GONE

Did any one else loose their group chat link? I have about 1k group members and yesterday around 4-6pm PST the link was removed. Any one else also have it remove? Wonder why, I have been adding about 120 a day for that 3 days.... but not sure if that would be it. Every one can still post to the wall... there is just now chat function.

pretty sure group chat goes at a certain size

i though it was 250