Can't purchase expansion with unlisted error code 100427 - Can't contact support either

[Doombringer BG.3740]

When trying to purchase Janthir Wilds expansion I get the error code "100427", which wasn't listed in the provided list.

From the little I found, I tried the following to no avail:

1. Disabling add-ons and clearing cookies.

2. I tried purchasing it in game, same exact error.

3. I tried doing it from my phone instead of my PC.

4. I figured I'd try using PayPal, but since I hadn't logged in it in a very long time and I had enabled two factor authentication, and the phone number was outdated, I couldn't login there either (the "forgotten cell phone number" help link redirects to the "forgotten email" article....).

5. I tried to sign-in here in order to get to the Support page, but any "Sing-in" buttons/links just redirect back to the main help page (the actual link) - perhaps a troll dev.

Not sure what to do now. ¯\_(ツ)_/¯

EDIT:

Because I was logged with my Anet account here, writing manually the link below seems to cheese-force auto-login at the support page (don't disable this feature, please), which usually happens when you click the Sign-In button.

Quote

https://help.guildwars2.com/login

Now I have access to the support page and will contact support. I'm leaving this for other folks in the future.

P.S. Please do not close this thread for the moment as I'd like to have to option to update this post in case I'm given an explanation.

Edited August 31 by Doombringer BG.3740
Added P.S.

[SoftFootpaws.9134]

i believe you can get past the login loop by logging in to arena.net instead of guildwars2.com. it's a result of security features in newer web browsers!

[Inculpatus cedo.9234]

Or send an email to 'support@arena.net' as suggested in the link on the front page of the Support site:  https://help.guildwars2.com/hc/en-us/articles/201862918-Trouble-Logging-In

[Doombringer BG.3740]

Update:

After talking to support, it turns out my bank was auto-blocking the payment for some reason, even though I had made purchases in GW2 before, and I needed to contact them.

I waited a few days, since I didn't have time to deal with them due to work and I figured I'd try to buy it one more time, somehow the payment went through all of a sudden (without me having spoken to my bank).

No clue what the exact problem was, but I'll take it. 😅

P.S. The thread can now be closed.

Edited September 5 by Doombringer BG.3740