Who I have the same questioned this topic

I have a Brother printer which I've been using the Hotspot with my S7 to print from my computer and working great. Added my MiFi 7730L and it won't print any longer. Why?  The printer connects to the jetpack and prints a success page, but the jetpack doesn't show it as a connected device and I'm unable to ping or connect in the network. When I switch back to my mobile hotspot it works and prints as it should. I was under the impression these were using the same build and should work pretty much the same as eachother.  Can't understand why my phone would work find but the jetpack does not.