I've upgraded my old TP-Link Archer router to new Archer BE930. I've set up the wifi to be exactly the same and mapped DHCP static leases to be the same as in the old router, so that I don't have to reconfigure my network. 

Now my Xerox WorkCentre 6515 usually works without any issues from any device in the network. After the router replacement I can't print to the printer.

I can connect to printer's web interface via IP-address, I can add printer manually via IP address in Xerox software, I can SCAN from it by using Xerox Software

but Windows does not see it as a printer and can't print to it. 

Also when I try to start a scan from the printer to upload scanned files to FTP Server (yes, I know!), that upload is blocked. The FTP is up and available, I checked.

So something in the new router is blocking traffic from the printer, but not all traffic. HTTP and scan requests are allowed, but not printing or FTP.

Can't print: 

I can reach printer via HTTP:

SPI Firewall is turned off on the router:

AP Isolation is also off:

What else is causing this in the router?

Many thanks!

Max