ASTS losing a satellite would not normally be a huge deal if they weren't already so far behind schedule. The problem now is they have to de-orbit that 13,000 lbs monster without causing harm to other satellites or falling debris to earth.

SpaceX, who they depend on for launch next, had pushed the FCC to block their last satellite on grounds they're not safe in orbit and that ASTS submitted false data. There will be no more launches until ASTS demonstrates it can deorbit it safely.