They probably blocked your IP address, possibly your MAC address. You can always use a website to use as a proxy to generate a new (technically a cover) IP. If its the MAC address, you would need to use another device.
I recently stopped by to ask a question about whether God came down to have physical sex with Mary. After a long pause they ended the chat. Is that question off-limits?
You mentioned sex to a bunch of hormonal, horny young single adults. Plus, you put it in a religious context. They were uncomfortable, err I mean that the spirit told them that it wasn't a good place to be and to follow the example of Joseph with potiphars wife.
Everything is outta limit. they only can ask standard questions. If it takes longer they try to supervise an answer or find something like a link to some crappy speech of the geezers or scripture. they have a list of inappropriate questions that should lead to end t h e chat ASAP. so the Gawd screwed Mary thing is definitely on the list. Just like the most polygamous topics, Joe and the gals, BoA and other "critical" stuff like that. I bet the fraud issue is a big no-no either.
I remember being in the MTC and having to "work" in their call-center answering questions over the phone and instant chat. Ugh. I hated it. Didn't help that I was questioning the church (and all things religion for that matter) when I was chatting with people. I was well educated during that timeframe though... but NOT by the church. My eyes were starting to become open.
In other words--keep chattting/calling them and raising these questions. The more seeds of doubt we can put into TBM missionary's heads the better. Their mission is to brainwash, so it's our mission then to un-brainwash. Spread the GOOD word. :)