Hope20. Sorry to hear that. Similar experience with my wife. PGS embies and two implementation failures, but we didn't do ERA. However, we switched to a new clinic recently and we will do ERA + endo biopsy this time. We told our new doctor about this and he said that the transfer technique by the dr sometimes does affect the outcome and he went into details about his techniques and I learned a lot.
What you can try is to check your immune system and see if you have a high level of natural killer (NK) cells. Your fertility doctor will definitely know what I'm talking about, but doctors have various opinions about it. If you do have a high level of NK cells, then some doctors will recommend you to do what is called Intralipid infusion.
Agree with Cotton2 about trying a medicated cycle.
Previously, our PGS was also done at Cooper and I'm from New York City. I never questioned whether things went wrong with Cooper. At the end of the day, Cooper does not have your embryos. They were only given some cells for biopsy. Dr said that Cooper has been doing PGS for a long time. You may want to check whether your PGS was done using v2.0 or v3.0 testing technique, but definitely not v1.0. You can find a lot of information on Google about this, and I'm no expert to say which version is the best, but I guess the latest? Personally, I don't think the issue came from PGS.