Dax Index Options (April and May Expiry) on IB

Hi.

Does anyone know why no market makers seem to make any prices on these options. I see the exchange mtm's them.
FTSE (Z) has market makers active on their Apr and May contracts.

Thanks

 

I have IB and DAX april ,May option prices are there.

 

Strange
I can load the april and may strikes. I see a close level, but i dont see any bids or asks or last trades.