@LynetteMN Our cases follow the exact same pattern, the last online update is that the fingerprints were added to the case in October 2022 (after it said it was ready for interview since Feb 03 2021)
(They were taken in December of 2020 - initially scheduled for late March 2020, but the country was shut down at that time, so they rescheduled them for that December.)
I have had a number of extension letters, I-551 stamps in the passport, and same here, now I have this piece of paper (I-94) where they actually even got the typing of the I-751 wrong, it reads 1-751...
@OldUser Thanks. We will look into a WoM.
Naturalization does not work for me, unfortunately. Austria generally does not allow dual citizenship and will all my family being in Austria I am not willing to give up the EU passport just yet. Covid showed that sometimes that's the only way to get back for a visit.
Will read up on a Writ of Mandamus.
Thank you, both!