There was a fraudulent and malicious DMCA claim against one of my sites. Heroku without any notice took down ALL of my sites, one of which was a part of my livelihood. They claimed they emailed me with 24 hour notice but that absolutely did not happen. I had to pound on their door to make them reverse it, they victim blamed me the entire time and had a super snarky and shitty attitude, told me I should have been more proactive about the notice I never got.

I cannot in good faith ever recommend a service that would take down a website with zero notice and be so uncooperative in fixing what was ultimately their fault. It cost me money for that site to be down and I had to cancel my entire day to deal with them, and if the stakes were bigger it could easily wind up costing my employer hundreds of thousands of dollars.