I too had this experience last week, for suspicious account activity purposes; as someone running my own company it was a kind of frightening prospect. I assume that my account was targeted for failed login bombing due to being rather outspoken about a certain person's style of saluting.
The verification process failed once or twice for me, but I finally got it done, and my account was restored within 24 hours - and with no details about the actual "supicious activity" that triggered events.
Still, there was very little way to communicate with them about it; the r/LinkedIn community has a stickied post about it, with some links that do not require an active account.
It's worth noting that I'd also been flagged by Cloudflare for extra checks for a while; I also changed my browser's User Agent and it resolved that.
If someone tried breaking into my account, I don't think locking me out of my account permanently is the solution for them. I have tried different browsers. I have tried both my mobile phone and laptop. I have deleted my app and reinstalled, yet nothing.
The verification process failed once or twice for me, but I finally got it done, and my account was restored within 24 hours - and with no details about the actual "supicious activity" that triggered events.
Still, there was very little way to communicate with them about it; the r/LinkedIn community has a stickied post about it, with some links that do not require an active account.
It's worth noting that I'd also been flagged by Cloudflare for extra checks for a while; I also changed my browser's User Agent and it resolved that.