Coinbase just froze my account after a 100k USDT deposit. WTF?

Coinbase has decided to freeze my account and withhold $300k+ of my personal funds for absolutely NO clear reason.

I’ve been using this account for 4+ years without issues, completed full verification long ago and used the platform normally the entire time. I have made more than 7figure transactions over the time with absolutely no problem at all.

A few days ago, my account suddenly became restricted after depositing USDT and I was asked for additional verification, source of funds information, and documents despite already meeting the requirements for the account limits and activity levels.

I wanted some funds in my bank so I swapped some XMR from my Cake wallet to USDT directly into my Coinbase address-before you ask, I have done this a dozen times- then boom, account frozen, source of funds required. What am I supposed to say the source of funds is yet I have had the monero held in my Cake wallets for years.

I currently cannot withdraw or fully access my own funds while the review is ongoing.

Support responses have been slow and unclear, and I’m looking for transparency and a timeline for resolution. Has anyone else dealt with something similar on Coinbase?