90002 issues here also, happens once a week for two weeks now, midnight time during pvp instance with many bots.
Patterns: Ive ran into 90002 after being disconnected from Shatter instance. I re-connect to the data center, initiate character select, error 90002 unable to connect to server happens. I can always connect to Data center, but not server. This problem lasts during the night, problem resolves in the morning/next day. I become disconnected during pvp instance, pvp bots seem to be during the disconnect. This happened twice now, last time was about a week ago, same scenario.
PC: I don't have another PC I can log into.
ISP: Unable to connect with different ISP
CHANGE: Family member bought and installed LTE signal boost for phone calls/ I disconnect that device while streaming or gaming.

ATTEMPTS:
Re-logged from game
Restart Computer
Reset Router
Unplugged Everything

About to Attempt
have to wait next day to access game server, again data center access I is not issue, only server access.

Dungeons I've Run:
PVP instances, Shatter.
Last week issue was shatter or Seal Rock, mostly shatter. with many bots in the instance