Please note that you wrote to the ResearchGate community, not to the RG team. However, you should be able to solve this problem yourself. Go to https://www.researchgate.net/publication/374944811 and claim your authorship. For this, click on "More". See "How do I confirm authorship of my publications to add them to my profile?" in this help page for detailed instructions: https://help.researchgate.net/hc/en-us/articles/14293005132305