Sorry about the bags. I hear it was/is a mess in FRA.
I suppose you could try contacting LH to make sure they have a copy of the file and your correct info for delivery (the report is supposed to be shared with all carriers that may have the bags). I'm sure they are swamped, though.
Sounds like it is going to take some time. I doubt the QR people will have any info until they get the bags at IAD. Hopefully they will when the travel system settles down.