I'm not here to argue ya or dispute your claims of weaseltry by this school...but showing up for your first live contact and saying "Hi, I may have a chronic health problem" is probably going to be the Kiss of Death for a teaching job...and a lot of other jobs as well.

One of the things that schools here hate and fear most is having a classroom full of students...and no teacher to put in there with them. Any indication that this could be the case is going to make them very skittish indeed.

And yeah, inept management, pirated software, and buggy networks are the rule in China. Never put your computer on a school network in China, and be careful about even trasnferring files to and from one. If pirated software bothers you, you might want to try your luck in Japan or Switzerland or some such...
As for the management and admin staff of Chinese schools...well, all I can suggest is that you take to hard drink. Maybe a Valium.
TIFC (This Is F***ing China).