Nobody has so far confirmed it was drones.
The comapny Copenhagen Airtaxi have confirmed that they were doing trianing flights in that area at the time of the observations. The used a small aircraft Socata TB-20 Trinidad, registration number...
Maybe wait until the supply of obese batteries is flushed out and replaced with the skinny ones that will make the Mini 5 Pro weight classification of sub 250g in the U.S. and Canada, neither of which countries have +/- 4% tolerance, like the...