Recently a few days back, I had to verify my Linkedin identity on a new account (I am 17 for context) and I used proton mail and Linkedin immediately blocked it and asked for verification

I legally couldn't verify because persona doesn't detect aadhaar card and their support system on twitter/mail whatever was incredibly bad so much so that it felt like copy-paste and I still haven't gotten the card. I have written about my experience too.

https://smileplease.mataroa.blog/blog/linkedin/ : (Title of this is) Linkedin's "final decision", restricting my account, making me feel unheard, Persona being Persona & the time I asked Linkedin support what 351/13 is to prove if they are human or not.