yes we did that way exactly.
could you kindly check please?
you did not.
first the filter is on 'Select0', that's quite possible however then the values should not be
'groupon:travel,groupon:deals' (there is nowhere a colon in the select0 fields) but 'groupon travel,groupon deals'
however it makes more sence to use a different setup with 'groupon' as Select0 in the feed configuration.
to 'group' feeds that's what the Select0 is for ( actually once upon a time it was called 'group' instead of select0)
then you can use a filter 'Select0 = groupon' in the groupon menu.
and 'Select= = 'dagaanbieding,groupon' in the main menu