People delete posts for all kinds of reasons - including accidentally violating NDA, or posting NSFW pics you no longer want "out there". Undeleting this stuff is opening Pandora's Box.
It’s naive to think deleting solves the problem. Once you post something on the internet, it’s out there forever potentially. Someone could easily saved whatever you posted, even if it’s under NDA or it’s a NSFW pic.
This is technically true, but then why does any website bother with content moderation? It's one thing for something to be archived on a hard drive somewhere and another for it to be google-searchable.
It says in the answer right there, the company must either be in the EU or you are in the EU.
Unfortunately, to protect user privacy we don’t know or store your IP address so you will have to provide some other proof that you are actually in the EU. An IP of course is also easily doubted, you need to provide legal documentation.