Author, I've cleared your tags — if you're not going to add all the tags for your article, it's best to just leave the page untagged and wait for an experienced tagger to take care of it. We have a team of people on the site who tag articles, and they search for pages that have no tags. Adding only a few tags prevents the team from finding the article, so if you're unfamiliar with the tags, it's totally fine to wait for them to take care of it.
In this case, "format-screw" is not a tag, "keter" should not be present, and you were missing "scp" amongst possibly other tags.
Overall, this doesn't work for me and I'll explain why
It's a mix of underdevelopment and poor formatting, personally.
The UIU article at the start is an image followed by a few lines of text - it doesn't look like a document, it looks like an image followed by a few lines of text. Take a look at SCP-4444 for a nice example of documents in a page.
Additionally, "UIU Report" tells me nothing about what the document is for or why it was written. The document covers a lot of facts about what's happening, but they're all kind of just thrown in there, with no justification. For example, you say "Witnesses described an entity appearing", but there's no details about what that entity is, who those witnesses are, whether they were all in one location or worldwide, how many witnesses, etc. And if they couldn't speak, surely they could at least draw it? "their vocabulary devolving into an unknown language" - how can the UIU tell the difference between an unknown language and nonsense? (I'm sure they can, but how?)
The SCP article effectively tells me nothing other than that the SCP itself is causing the aforementioned stuff. [DATA CORRUPTED] as a redactor isn't that effective here with the quantity that it's present in - it feels like it's there because you have nothing to say, not because that data is actually missing. Here's a guide on effective redaction (sure, corruption is different to redaction, but to the reader they both do exactly the same thing).
"Protocol 2317-579" - I want to know what the protocol is, and I'm sure Emily does too. What I don't need is two crosslinks to articles which aren't relevant. If you want to pay a homage to those articles, just saying "2317-579" is enough - putting a crosslink there implies that reading that article is critical to the understanding of this article.
"apparently there's something that can't be named erasing people from existence" - while you've chosen an email as a method of showing us what's happening rather than telling us, the email has someone telling us what's going on. Also, it seems weird to send an email for this - "hey, our dad's died, and people are disappearing" - surely an urgent phone call would make more sense, or at least imply a sense of urgency in the email? Also, how does John know that their dad has gone if he shouldn't be able to remember him? In fact, how does anyone know that anything is happening at all?
"Unusual Incidents Unit Agent… Nor is anyone else that assisted in containing SCP-4896" - the UIU is a separate entity from the SCP Foundation. If they're working so closely together for this SCP specifically - close enough for the Foundation to want to protect one of their agents - it would be nice to have some context to know why.
"Shocked, the man says "What the fuck? That was quite a mindwipe you got there" - okay, my bad about the memory thing. But that's a very unprofessional attitude from the SWAT guy. And we still don't know why she's there - Emily is clearly the only person who took the secret train, and there's no one else in this "strange, clean and enormous office building" except this one SWAT guy… so why is she here?
"the world will be reset in 10." says the man." - and that's it? Did that process just happen to start as soon as he finished his sentence, or did he start it? And there's no one else worth protecting? What does this process mean, what does it do? "a strange white orb grow in the distance" - we're in an office building that's connected to an underground train station, right?- where's the distance?
And then you open the last collapsible and finally reveal… nothing. No answers, no context. Just "we contained it", but there's no explanation of how.
I feel that this would be more appropriately-posted as a Tale, because with an SCP article you expect there to be some details about the SCP, but there's none of that here, and very little justification for it.