Stupid security...
You can disable email authentication if you prefer to have your account hacked.
https://account.guildwars2.com/recovery
Good luck, or should I say farewell.
It’s possible you have a dynamic IP and it changes. If you don’t I would create a ticket to let support know that your Network Remember button is not working.
ArenaNet Communications Manager
Everytime I want to login I have to go to my mail and confirm ten bilion times that I want to login, the remember network button doesn’t even work.
Your IP is accepted as “known” in a range, but if your ISP is using broad ranges of IP addresses, you will be asked to confirm several, as the ranges get added to your list.
You may disable authentication, but I do not recommend that. If you feel you have a genuine issue with the authentication system, you should post in Technical Support and they will try to help.
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet