UPDATE: Beeper, through their Twitter account, is saying that they’re working on it and “hope to have good news to share soon”:
Work continues to fix the issue causing the Beeper Mini outage. We know how hard this has been for those who loved using Beeper Mini, and we’re extremely sorry for the inconvenience. We are feeling good, though, and hope to have good news to share soon.
No, because iMessage isn’t a gatekeeper in the EU. It’s comparable to Signal in size, depending on the country.
Hopefully with Apple adopting RCS they fix the spec to include e2e encryption. At the moment only Google’s proprietary client does RCS with their own encryption.