Was rebooked onto flight via Frankfurt which would get me in Amsterdam for 6pm. At airport, KLM attendant told me flight was overbooked and there was no way I could travel. Have applied for compensation for hotel etc but who knows. Cancelled due to high winds. I had checked in online yesterday but was advised to collect my boarding pass at the airport. Initially thought may be due to UK/EU visa after Brexit but now looks suspect that they knew yesterday flight wasn’t going