I'm having a persistent problem with login codes for websites sent by text message simply never arriving, even if I resend them multiple times. It's been getting gradually worse over the past 6 months, to the point where logins using text message codes are now near impossible.
At first I thought that this was an issue with the websites I was trying to use, but I'm beginning to think that EE has an overzealous anti-spam system that is causing this problem, for the simple reason I'm having this issue with every single site that uses a text message, every time. eg I've just tried and failed to login to the NHS site to get a Covid pass for travel, but can't because even after two re-sends the texts never arrive. Google usually requires 2-3 attempts (and never works if I'm out of the country). Is there anything I can turn off to improve deliverability? This is getting very frustrating.
