@Ruud_van_der_Teems you should post your comments about problems with Alexa Echo on the French ISP Free here, as this is a long running thread on that topic. I am not the app developer or affiliated to Athom, just another user trying to help point you in the right direction. Sorry I can’t be of more assistance.
@staeff, @SergeP, @thierry_arguimbau,
I change my internet service provider for Orange (Sosh) since 3 days : all flow and connections are working perfectly with automatic connection and manuel connection on amazon.alexa.fr 
I don’t really understood what can be the root cause but Free is really the problem.
Thanks for all the energy and actions you deployed on this topic
