Newly Installed LTE Home Internet, Now Slow Speed...

I installed the service early this year. Was great, 50meg down at least consistently. Now lucky to get 2 meg down.  I have always been on the edge with only a couple of bars, but that didn't affect the speed. Also for the past couple of months if you go to the coverage check on their site, I am no longer eligible for home internet, although I still am connected and am being billed. I think I will be canceling soon. This also has nothing to do with connected devices, I disconnected everything, the speed is still 2meg down at the best. I have very few options where I live and this was great while it lasted.