Tmobile - online account "Service unavailable"

[Stephen Tashiro]

I encounter a "451 Service unavailable" error when trying to create a Tmobile online account.
According to https://piunikaweb.com/2023/01/11/t-mobile-f451-service-unavailable-error-likely-caused-due-to-trackers/ this is because my browser (or something else on my computer) is protecting me from tracking software that Tmobile wants to use. Anyone else have this problem?

[Lee Schierer]

I works just fine on Firefox. Are you running anti-tracking software or a VPN?

[Myk Rian]

An ad blocker such as Ublock can cause problems. Turning them off for that website can help.

[Stephen Tashiro]

I works just fine on Firefox. Are you running anti-tracking software or a VPN?

I'm using Firefox without anti-tracking or ad-blocking plugins. Perhaps, it's some setting in Firefox, but I don't mind it protecting me.

[Curt Harms]

I'm using Firefox without anti-tracking or ad-blocking plugins. Perhaps, it's some setting in Firefox, but I don't mind it protecting me.

I sometimes have a problem with Firefox and some web sites. I've messed with Firefox and the O.S. (Ubuntu) so it might well be due to my tinkering. I've found that enabling Trouble Shooting Mode (under the 'help' menu) fixes many problems though not all.

[Alan Rutherford]

Well waddya know? That lets me get into costco.com, which is the only site I care about and haven't been able to access by tweaking NoScript or PrivacyPossum. The Falkon browser has worked for me the few times Firefox won't.