It is not easy for an inexperienced user to set up rclone according to their needs due to the extensive configuration and the number of variables, especially using the command line.
However, after spending many hours configuring, implementing, fine-tuning, and correcting numerous my setup errors after two months of use, with four daily sessions from a Synology DSM 7.xx NAS, I'm happy to say that rclone—which is also free—works wonderfully well and offers a depth and breadth of tasks and conditions to cover any need.
Infinitely superior to MEGAcmd.
Sincerely, thank you!