Service provider and service not linked on search page + show vailable times button not working

I have setup the plugin with 3 different services and 5 different service providers.

On the make an appointment page:
When choosing service 1, 2 or 3 the service providers do not update. ( Only provider 1 and 2 offers service 1. Provider 3 and 4 offers service 2 and provider 5 offers service 3)

Also the show available times button next to service provider and service fields do not work.

Please help

thank you
Theodor