This site can't be reached

certain sites I get "page cannot be found"" in t-mobile network.   But if i turn on VPN, they magically can be found.   there are a lot of quirks that i have had with this t-mobile internet/network that i didn't have with my previous provider, ie page can't be found for certain sites, printer can't be found over the wireless.   Use VPN service for these troublesome sites, and plug in your printer via ethernet and hit it via IP address are my workarounds for t-mobile.