Hello.
>Please clear my character session data

Unfortunately this is not something that can be done. We could delete the character but just to be sure. Other official servers that share that particular character do work? Because if so then the issue might not be with the character.

Yes, other official servers work perfectly with my character. The issue only happens on server 0754. I have already tried clearing my game cache, using a mobile hotspot, and flushing my DNS, but nothing works for this specific server. If deleting my character is the only way to reset the connection to server 0754, please go ahead and delete it. I don't mind losing my gear as long as I can play on this server again.

Hello.
Are any other players able to connect to the server you cannot connect to? Also as I have said, if the character connects to another server then the issue is not in character and resetting it will likely not help.

Yes, other players can connect to the server without issues, it is only happening to me. Since the issue is not the character, it must be a specific routing or IP block from my ISP to this server.

in such case you should try to contact your ISP, describing that you are unable to connect to this specific IP (server)