Yeah, I did the same thing. It's really quite terrible. I got a long horizontal line on one of the first systems and it actually just went a few pixels.

This LAN would have also unconditionally failed on all Uplink versions I've seen. Maybe the actual vetting of LAN mods was less than supurb.

Oh well, i need to discard this LAN then. I knew it sounds strange to have only LAN without public server or something, where the hell you'll get admin voice to crack down the main server?

In some missions I receive the message

"We cannot allow you to contact this employer, on their specific instructions."

Is there some form of to outline the situation and to accept the mission?

No, because that's a trace a hacker mission where you're supposed to trace yourself.

Not a good idea.