u/AdEmbarrassed6248

I bought a WiFi extender from Spectrum yesterday. I recently moved into a new apartment, and need something with Ethernet to connect to my PC. Well, it was having issues connecting and Spectrum told me that I can’t use an extender in an apartment. I find that hard to believe, but if it is true, can anyone confirm? And can anyone give any alternatives to get Ethernet to my pc without running a cable on the walls?