The link to Poolin's blog post:

And here's an article on CoinDesk:

And here's a Tweet that kicks off a good thread on this:
Running an FPPS pool is not an easy task.
Poolin has managed to build an impressive business given how many challenges they have faced over the years. Its been an interesting journey πŸ‘‡πŸ‘‡
https://nitter.it/ethan_vera/status/1566842431651315712 <-- Shows the thread in a single, easy-to-read, web page
Correction on above ... this is actually the post on their blog:
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Here's a Tweet that kicks off good Twitter thread indicating this could finish Poolin.
How to destroy your share of the #Bitcoin ecosystem in one step.
  1. Halt withdrawals
Which is what, Poolin, one of the world’s oldest and largest pools has now done, citing liquidity concerns.
What does this mean? A 🧡
[Nitter]
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