Normally, people get the [https://www.askprob.com/why-does-brother-printer-wont-print-black-ink/|brother printer not connecting to wifi] problem due to the network settings or router settings issue. here are the steps to fix the problem.
* Reset the network name and password, and then retry to connect to wifi.
* Update the printer firmware and try to connect your printer again to the wifi.
* Turn off the router, and reset the computer and modem, and power them back on and try to connect your printer now.
* Reset the network settings, and then reconnect your printer to the wifi network.
*