That "ketchup" (!) was poured over the spelling, ...
Not only ketchup, also mayonnaise.
I don't know why the straps are where they are here...
... But I would generally install curtain rods as high as possible.. (and leave the curtains as long as possible)
I looked around some more, apparently that’s actually how it’s done. That reassures me.
There are curtain tracks that are attached directly to the ceiling anyway. For example from Ikea
Thank you, I just bought that for the large window. That way I can use a third bracket on the ceiling, which wouldn’t be so easy on the wall because of the roller shutter box.