Guild Wars 2

I received the following email from noreply@guildwars2.com.

“Guild Wars 2 Account Will Be Shut Down Inform

We are sorry to inform you that your login account [My Email] will be shut down or partially limited within 72 hours due to currency transactions or abnormal login. If you want to remove restrictions, please click the following link to validate:
https://account.guildwars2.com/login?
Please keep in mind that Guild Wars 2 is a global game with hundreds of thousands of players. This means that standards of behavior must be upheld. For your convenience, you can obtain more information about our rules at the address listed below.

https://www.guildwars2.com/en/legal/

Guild Wars 2 Account Support Team"

I have not made any currency transactions. I did check my account and removed an authorized network in the security section that I did not recognize. I’m assuming this was the reason I received the email? I have also changed my password once doing this. Is there any way to prevent my account from being shut down now or finding out the real reason and whether this was an actual email or junk mail?