I tried to login and open chat with my android and everything works perfectly, website takes a little bit to load, anything else works well. Do you use android or ios? And oh, I was using google chrome latest version for android. Don't know if you have that problem because of invalid ssl which they had but try to clear cache or try with different browser if using android. If this still fails, then developers will take care of it.
There seems nothing to be wrong in Bitsler's chat code.