Yup. My Seismitoad knew Muddy Water, and Seismitoad is Ground and Water-type, but Ground types couldn't hit her Emolgas, so I used Muddy Water against both of them, and using it twice brought them down. Then I used Bulldoze against her Zebstrika and it brought it down in one hit.
I'm not really sure. It's probably something to do with the new router I got a few days ago; it's been acting up quite a bit. I'm getting another one soon, however, and tomorrow I'm getting a replacement one, so that might suffice for the time being. I just hope that this new one comes soon.