Interesting. Just received an email from Lufthansa that their online check-in is now open 30 hours before the flight. Interesting, in that I had been doing that successfully with Lufthansa since 2015, have not been with them since the pandemic.
I just did a trip with Lufthansa and they are very communicative when it comes to flight times and checkin times and baggage claim check numbers and gates and ... well just about everything.
Especially if you have the app AND give them an email, you'll get bombarded. No telling which media will get which message first.