A beginner coral doesn't mean "a brand new tank" beginner. Understandable mistake, but a quick search should tell you any and all acros take a minimum of 6 months of tank stability.I just bought these acros all at once, and the latest one I bought was a stylo, which I saw was a beginner coral . I rlly only spent around 50-75$ on all my acros because it was sbb's sale. They are all now quarantining at a friends house whose been reefing for YEARS(and its a friends dad so, I mean YEARS)
Regardless of where you bought the corals or how much, it's still a living animal. While all reefers have coral deaths, it's our responsibility to provide as stable of an environment as possible. Acros in a tank 2 months old as a new reefer is irresponsible. Hopefully you've learned and it seems you have since you've off loaded to another tank.
Talk to your friend's dad more if he's been a true reefer for years. He'll have knowledge of all the info you need to know and more importantly (and hoepfully) be able to convince you when to hold back on pulling the trigger on purchases. That's the hardest part FOR EVERYONE in this hobby, but a necessity.