Not pretending to fully understand this but:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3498851/
Does this apply and if so, what is the maximum safe dose of Flashpoint?
This paper is incredibly light on citations. I had to dig through almost all the way to the end to find any actual examples of complications from excess licorice (or licorice extract) intake.
From what I saw there are 2 separate n=1 case studies of 2 elderly individuals who seemed to experience complications correlated to licorice:
1 is a case study from 1963 of a 63 year old man with diabetes and the second is an 86 year old woman. In both cases, there's a correlation to licorice intake but it's not a conclusive link.
Also, in both cases, cessation of the licorice intake along with some mild interventions such as administering a diuretic, quickly reversed even some fairly alarming symptoms.
In general, I'm not seeing evidence that glycyrrhetinic acid or licorice extract is a concern for most healthy people who are not elderly and/or suffering from a preexisting condition.