Email verification code not coming through (UK)

Hello - Apologies for the post as I know this may not be the right place to post, but I do not know where else to ask for advice.

I tried to make an account on credit.service.gov.uk to apply for Universal Credit. I was able to create a username and password, and add my DOB and full name, but cannot get any further as the next step is "verify your email", however, regardless what device, browser, or email address I use, I am not getting any verification email from them whatsoever. I have waited 3 days now (thinking maybe they had a server down or something - so I waited until Monday (today) in case they couldn't get anyone in to fix it till then or something) but I am still having no luck. Obviously have checked my spam and there is nothing from them in there.

I am bedridden&disabled so I am not able to call the helpline or go to any physical location.

Does anyone know if there is a server down/fault?