Btw all the *.platypush.tech domains also live on some Linode servers, but luckily they are in the Frankfurt data center. So while login may be broken, at least the servers are still up.
It's definitely been a wise choice not to put all the eggs in one basket. It'd be probably be even wiser to host all the services on at least two nodes in two different data centers, and have some failover mechanism in case one goes down, but I hope that Linode outages won't be so common to push me to implement such an expensive solution...
The issue has now been fixed 🥳