Home WiFi router wont connect to my Ricoma MT 1501 Embroidery machine

I can’t get my TMobile router to work like my Cox router. When I plug ethernet cable into my T-mobile  Home WiFi to my Ricoma MT 1501 Embroidery machine ethernet port, it doesn’t connect. I don’t have this problem with my Cox router. I am doing this so I can then send files via wifi to the tmobile router exactly the way I do with my cox router. This eliminates me from having to plug my MacBookPro directly to the MT via a long long ethernet cable, or walking over to the MT embroidery machine.