I've been facing problems with the platform since Saturday. Firstly, i attached a fulfilled milestone that, later, I found out that didn't go. I thought it was my mistake. But today I saw my account was on a hold, and I had to prove my human existence. Just now, I realized all my proposals have been withdrawn, and I had to prove I'm not a bot to enter the community discussions. It's weird.
I checked and can confirm that you were requested to complete an identity verification for your Identity Verified badge. You may read this announcement post here, and this help article here for more information about this badge.
It also sounds like you were being asked to enter CAPTCHA before you can access the Community page. This could be the case if you cleared your browser's cache. If the issue persists, you can come back here and send us the reference ID at the bottom of the CAPTCHA page so that we can look into it further.