I bought a vortex viper HS that I put on a gun shooting 1/2 to 3/4" groups

After putting vortex scope on the best the gun shot was an inch
Most of the time closer to two inch groups
So I sent scope off to have it checked and this is what the packing slip said

Reset parallax at 100 yards and secured objective in place.
Tested and checked all functions




Does that mean scope was not holding zero and they fixed it or that nothing was really wrong I'm a little confused

Kinda new to all this stuff

Thanks