google gmail will be disable lesssecureapps so evry one you need now google app password
this way how to enable google app password in mikrotik
arabic videos :
https://youtu.be/fxd0ZIBKJMA
and if you need test make backup by gmail :
https://youtu.be/bQZVFC2LtDI
english videos :
https://youtu.be/mliVNq8iUU4
and if you need test make backup by gmail :
https://www.youtube.com/watch?v=j9yI0rmSzZc