I've been using wise for a year or two. In fact, I had already uploaded my passport, etc. That's why I thought it strange they were asking again for the same stuff. I did try, as I mentioned in an earlier post, to do a transfer before I submitted any documents and it went very smoothly and no docs were needed to be uploaded. I'm beginning to think an earlier poster was correct and it was a phishing email looking for my info. I'm not going to upload anything while continuing to use the app and see if anything breaks down the road.
Edit: I likely neglected to mention the demand I received was in an email, not from the app.