It's actually not linked to my name as I search on delta.com with my name (without the Mr) and the reservation came up. The problem is I'm flying from Canada through US to Amsterdam and we still need to show our vaccination to get in the US. I haven't flown with Delta for 3 years so my vaccine certificate is not in the system. When I check in, it doesn't ask for it (which is weird) and it's not able to validate my admissibility to enter the US. I'll take care of it at the airport. I do see my boarding pass on the phone app now but instead of the QR in the middle, it says document check required at airport. Thanks for the help.