The post going around Tumblr suggesting it’s an official and fully-authorized spin-off from Doctor Who that has been given the thumbs-up by the BBC is, of course, a load of bollocks. It’s a fan-film project that was trying to raise over $1.25 million dollars to tell a story that wasn’t theirs to tell. Their reasoning behind why they asked for so much money, which is essentially “Veronica Mars raised tons and that’s not even on the air anymore, I bet we can raise loads more than that" - is fucking preposterous, especially considering they’re not affiliated with the BBC in any way, shape or form.
There is nothing even remotely official about this project, and the powers-that-be have made it clear time and again that they have no interest in telling a prequel story about the origins of the Doctor.
Wanting something to be a thing does not make it so. Once again I refer you to this post which outlines how easy it is to fact-check this stuff.