Facebook’s parent company group Meta received a green light on Friday from Germany’s Cartel Office to take over the US-based start-up Kustomer – although the authority said it had not been an easy decision. Kustomer, founded in 2015, offers customer service platforms and chatbots that answer users’ queries automatically online. Cartel Office President Andreas Mundt noted on Friday that Kustomer could be a relevant building block for Meta’s strategy. “It is with unease that we ultimately had to acknowledge that the effects of the acquisition would not have warranted a prohibition under existing…