Gov.uk website: "we have signed you out for your security"

Me: *clicks sign in link*

Me: *not prompted with re-entry of password, just takes me in automatically*

Great, thanks so much, I feel really secure and not at all like my time is being wasted.

Page just timed out while I was trying to authenticate for another service. The screen I'm faced with when that happens? 404

Gov: "You will need your Unique Tax Payer Reference number"
Me: *enters number that is labelled "Tax reference" because surely that is it*
Gov: "No, your Unique Tax Payer reference is 10 digits and includes the characters 0-9 only"
Me: *finds another number, looks promising, there's 10 digits, but there's an 11th character at the end: a letter. I guess I just enter the number part and leave the letter???*

It "works".

Someone working on GOV.UK drank the "contractions are always more accessible" Kool-Aid...

Can you spot the problem here?

What a shitshow.

Two problems here:

1) It's not clear AT ALL that optional means "enter an amount if it's above zero" and not "you don't have to bother with this field because it's not important", which is what it normally fucking means

2) It seems like it's saying "calculate this yourself before entering" not "enter the amount we gave you having already processed that gross amount" which only becomes clear when you scroll way down to find the BEFORE tax box that accompanies it

Also, if I enter an amount like £245.27 it takes off the pennies and makes it £245.00. Is that a glitch? Is it making a liar of me? Or are PENNIES NOT TAXABLE because NOBODY TOLD ME.