Mike suggets you remove your number and just ask for people to PM you. Then give it out privately.

If you don't get any response from members more local then feel free to contact me and I'll fix the problem for you.

I very much doubt it's anything your doing wrong and more the fact they haven't shown you how to correctly recover or give you a recovery option in case the PC crashes and you loose your settings. It's not difficult and should take less than 5mins.

That said your PC shouldn't be crashing either and once setup correctly Mach3 is mostly stable. Often Mach3 gets blamed when things go wrong when in fact it's often mechanical or electrical issue that's to blame.
If your PC is crashing often then it needs replacing or sorting out. I also suspect (knowing this company) that your machine is using the Parallel port which is heavy on PC and unreliable which could be some if not all of your problems.?

Anyway like I say if you get no joy PM and I'll speak with you.