Use Clipgrab for youtube, which has undergone some criticism in the past – for me it is not problematic, mind you the ~100 mb d/l size does not account for relatively simple and uncluttered user interface. Clipgrab relies on this yt-dlp, an enormous project with no other purpose but to download stuff from youtube.
Signed up with PlayOK around 4 or 5 years ago, where I built up passable stats and rep, and after a recent enquiry about account accessibility, the reply was:
Yes, this is a normal practice to remove unused accounts
We are not able to restore accounts that were auto-deleted
A better way for a site like that to avoid excessive user hair pulling, is to automate emails to recipients deemed as inactive after a time, requesting them to sign in if their desire is to hold on to the account.