I think there is an problem with ink.
Maybe the nozzles get chocked Or ink tank is empty.
but if its about inks
then go for the solutions given here:
[https://brotherprinter.support/how-to/fix-brother-printer-offline-issue/|Brother printer offline]
[https://brotherprinter.support/blog/all-about-brother-control-center/|Brother control center]
[https://brotherprinter.support/how-to/connect-brother-printer-to-wifi/|Brother printer wifi setup]