I don't care enough to find the biggest stories over the last 15+ years but here are two articles from January 2022 referencing a class action lawsuit over freezing of funds without explanation:

https://arstechnica.com/tech-policy/2022/01/paypal-stole-use...

https://www.engadget.com/paypal-lawsuit-freezing-customer-ac...

And to be clear, this is not an isolated event.