It seems that after WeShare was acquired by miles the API at https://mos-p-euw-weshare-apm.azure-api.net stopped working. I have not yet checked whether the cars are available through the miles API.
Cars are available in the Miles API and can be distinguished by license plate.
Miles is however quite good at making it hard to scrape their API (at least using the same credentials over and over).
It seems that after WeShare was acquired by miles the API at https://mos-p-euw-weshare-apm.azure-api.net stopped working. I have not yet checked whether the cars are available through the miles API.