@MowMiRandy Are you still currently receiving those code:net errors? I'm showing quite a few matches completed normally in the past few weeks here.
I'd just like to get an idea for how often you're still seeing that error, or if it was just for that previous period of time you mentioned.
If this is still currently happening to you and you've already finished the other troubleshooting steps, the next thing we could look at would be a UOTrace. That will give us a better idea of the route your connection's trying to take to get to our servers.
Instructions for that can be found in the previous link as well if you'd like.