EverestCM looks legit to me. Does this broker use a MT5 software？

https://everestcm.com/

EverestCM is a regulated broker under a valid license issued by the Mauritius Financial Services Commission (Mauritius FSC) bearing license number GB21026300. 

As for the question you asked, we recommend that you ask the official customer services directly for a more accurate answer. For more details of this broker, please check our full EverestCM review.