something's wrong with open seeks in online chess.  All you get is a white screen, and the invites are stacking up.

patzer a member of the staff is aware of this and working on it .

It is very annoying because you also cannot accept challenges

Just hang on ! be patient the staff  are working very hard on this. Just read the forum or even post a forum for now. 

'Spam' posting this on all different challenges threads.  While our chess.com staff is busy taking time off from the Holidays to fix this we can semi-bypass this.

One way to fix this problem, if you see a challenge you want to face, just create the 'opposite challenge'.

For instance, let's say one of you wants to play me.  I have a 7-day per move game out.

Just do the open seek for a 7-day per move game, with ratings range of 1400-1500.