I have the same problem. The airlines are pretty smart about this problem to ensure their passengers don’t get caught up in this - I’ve had them change the nam

I have the same problem. The airlines are pretty smart about this problem to ensure their passengers don’t get caught up in this - I’ve had them change the name on my booking before at check in because the travel agent didn’t do it right. Austria now, by default, gives people the option to put a notice in the page facing the name page that says in multiple languages that Schroeder is equivalent to Schröder. Not sure if the Germans do it too... can’t hurt to ask.