I am currently in a Flixbus bus, but before boarding on the bus I didn't check-in my ticket. The bus arrived a bit late, so everyone was boarding freely without showing the ticket to the driver (conductor) and so did I as a victim of sheep psychology.
Can there be any negative consequences of not checking-in your Flixbus ticket? Like my seat being sold to someone else on the other stops on my way or my return ticket being withdrawn?
Note that I am traveling together with my friend, and my trip is between 2 Schengen countries.