Printer HP Laserjet tank 2604dw doesn't work

[YuliBT]

To put it briefly, nothing works. From the very beginning, everything went more or less well, but when setting up the Internet, everything went in a different direction. The printer in the HP Smart application is constantly displayed as offline (it was possible to change the status 2 times), it seems to connect, but it doesn’t. I did everything according to the instructions of the WPS on the router, but the Wi-Fi button continues to blink. Then when I wanted to turn something on (print or scan) it all broke down, the scan still worked but the print didn't work at all. When I wanted to reboot the printer to do the setup from the very beginning, I couldn't, all that works is it turns off and on. In other cases, all the buttons just blink until you turn the printer off. I tried to do the Setup or contact support via HP Smart, but nothing worked, it only throws out errors or the printer starts blinking again with all the buttons completely, it's also showed me number 79 on the printer 

[ZBoost_Ultra]

Hello @YuliBT 
Since there are multiple errors, I recommend doing a factory reset and setting up the printer again.
Steps to follow- https://support.hp.com/us-en/document/ish_9170867-9210020-16

Hope this helps!