Hey Gaetano,
these are no instances of M0, but these are M02, M03, and M05, which are different commands.
And the M6T201 command seems okay. Your g-code should run fine on the Onefinity Controller as is.
What I posted above seems not to apply to the g-code your installation of Carbide Create produced, possibly because you have Carbide Motion license installed on the same computer.
In this case you can run it like it is, but only if you replaced the faulty code in the ‘tool-change’ field on the SETTINGS page by one that works (which will also honor the tool numbers in your g-code) (see also here for more general explanation).