Broken after 3 outings - DI Optical Raven Series Red Dot Sight, RV1/RV2

Was initially thrilled with this unit but on the third shoot, it has failed miserably. Will not hold zero after one shot on an AR15. 5.56. Not much recoil. I’m not talking a small adjustment. It’s a foot or more off at 75yds after one shot. I adjust it and fire and it’s gone again. Something broken inside. This weapon is barely used and always goes from the safe to a padded hard case. I think I’m out of warranty but hoping OP helps me out on this. Unable to reach customer service due to the current “situation “