It isn't clear from the post that the doses you used were what was recommended. IIRC it's 1 ounce LG / quart of ATF.
It can sometimes take a bit to take effect. Case in point was the A4LD trans in my old '91 Ranger (about 80k original miles at the time).
I had done a total ATF change using Mobil 1 shortly after I got the truck. Part of the issue was it had a "reverse bang", i.e., very hard shift into reverse sometimes. The M1 didn't touch that symptom.
One bottle LGR took close to 100 miles to change how it operated. The reverse bang was greatly improved, and shifts a bit smoother.
Trav had said you could add a second bottle (per LG) which I did. That took only about 25 miles to make the reverse bang go away completely. It's still gone to this day, still with smooth shifts.
I also added LG Platinum to my '07 Accord at the 1 oz./qt. ratio and Maxlife synthetic ATF. Trav has measured 15-20 deg cooler trans temps using LG. Given the earlier history of this trans...not an issue by '07 from what I read still...I thought it worth the effort.
As was said, it's top drawer stuff. Some people are ideologically opposed to it, but have with zero experience with it.
Whether it will help your trannys at this point is TBD. It isn't a cure all, and the shift flaring may not be fixed without mechanical intervention. But it's cheap enough to try, for sure.
Like anything YMMV.