Continuous 90002 error

[EchoingSteps]

Hello,

- I have not been able to play the game for three days due to uninterrupted disconnections (I get a 90002 error ~10 seconds after I enter the world).
- I play on PC (Windows 10) with the Steam version and all expansions activated.
- I have played more than 1000 hours since January without any problem before this one.
- I have a good Internet connection (optical fiber) which works fine for every other service than FFXIV.
- I do not use a VPN.
- When I get to the lobby, the server connection is displayed as Excellent.
- I tried every suggestion from this post but to no avail.
- I reset system settings and uninstalled/reinstalled the game but the problem persists.
- I did not change any network, firewall or antivirus settings recently (FFXIV has obviously been allowed by the firewall since I started playing).

Can I get some support on this issue?

[EDIT]
- The problem seems to be limited to my character Cole Porter on the Alpha server (EU Light data center). I tried creating a new character on this same server and I could play without disconnections.
- This seems to be the same problem as this post, which I found after I posted this thread.