Hi!
First, they removed account delete option.
Here is a link to saved page as PDF:
https://we.tl/t-W5L6ADbmql
Second, they removed free breach checks:
Link to GitHub
Third, they removed free send feature:
Link to GitHub
But (!) allowed sending in trial period so this will not stop abuse because abuser will simply create new account.
Oh geez, just made my free alias on proton mail, fingers crossed things go well 😭