Personally, the motherboard of my laptop burned out (this has nothing to do with the connection issue on Badoo but was filled with compacted dust at the fan outlets) and here I am back with the desktop PC, turned off for years. With this one, I can connect to Badoo without any problem. I'll see when I change the motherboard, but my budget doesn't allow me to do so for now. After a system restore, the problem will likely disappear. Do let me know if you have a solution, thanks.
Steeve