Thanks very much for the tip. Unfortunately, it still times out on me. Not sure what's going on. I tried using my ham call with the password from Russ Chadwick (which had worked for years until 25 days ago), then I tried the ham call with "-1" as password, then I tried my station ID "AP841" with a password of -1. None worked. My Weather Display log files are below. They seem to indicate a connection followed by a time out after the password is submitted. I'm thinking the system dropped me at some point.
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CWOP data send start 07:29:50 3/14/2018
APRS Connecting to: cwop.aprs.net
Aprs connected
sending pass command
user WE1A pass xxxx vers wx-display 10.37S67
Time out
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CWOP data send start 07:20:00 3/14/2018
APRS Connecting to: cwop.aprs.net
Aprs connected
sending pass command
user WE1A pass -1 vers wx-display 10.37S67
Time out
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CWOP data send start 07:25:06 3/14/2018
APRS Connecting to: cwop.aprs.net
Aprs connected
sending pass command
user AP841 pass -1 vers wx-display 10.37S67
Time out