Hi Remy21,
Sorry that you're unable launch XD. We'd love you help you out with this, however, we'll need some more details to assist you further.
Please share the OS version which you are using, I would also like to know the version of XD which have installed.
I would encourage you to go through Corey's response in message # 21 in this thread: - Re: ADOBE XD keeps crashing on Mac 10.14.4. I would also request you to try the steps mentioned in this link: - Adobe XD crashes, unstable, or displays rendering artifacts in macOS 10.14.4 and share the results.
Thanks,
Atul_Saini
PS: We would be delighted if you could join us in discussing Overlays through this forum post https://forums.adobe.com/message/11065245#11065245.