Originally Posted by flying_blue_white_red

Thanks both of you



Indeed, the lady on the phone confirmed that there is no (Police) control upon leaving Denmark, only when entering.
She also said the proof must be a print out, not on the phone.

Since yesterday, Belgium and Spain are now in orange for Denmark, not sure what will happen in September but as you mentioned, postponing the trip might be the better option.

Or even a very stupid idea for a quick turn around: don't show these proofs upon arriving so you'll be sent immediately back to the plane .