wifitether says only 1 device can be connected!!

I using unlocked sprint m9 with bad boyz in metropcs. i get full lte speed but i can't tether from it. I used built in hotspot option but it says that only 1 device can be used while roaming. To add more, I dont actually see the ssid on the laptop or other phone.
I tired wifitetherrouter from playstore but even that dont work with the settings in their hompage..
Anyone with unlocked sprint m9 able to wifi tether?

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