People bragging about not taking their PTO days are quite common in the work place. I always like to remind them that it's a compensation and part of their contract. Then I brag that this month, I didn't asked to be paid because I'm dedicated worker like them. It makes them look stupid.
And manager being difficult when requesting PTO are horrible. Because it's their job to manage staffing. They should understand the concepts explained above. But they don't, they are probably the kind of people bragging about "working a lot"
You're account is tied to an email address, you just give the email address as well.